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prateekshawebdesign · 3 months ago

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Why Choose React for Your Web Development Projects?

If you're diving into the world of web development, you've probably heard the buzz around React. But what's all the hype about? Simply put, React for web development is a game-changer, offering a host of features and advantages that make it a standout choice. One of the primary benefits of React is its ability to create highly dynamic and responsive user interfaces with minimal effort.

This is largely thanks to its component-based architecture, which allows developers to build reusable UI components. Whether you're working on a small project or a large-scale web application, web development with React ensures a seamless and efficient process. So, why choose React over other frameworks? Because it not only simplifies the development workflow but also significantly enhances the performance of your web applications.

When it comes to React for websites, the advantages are plentiful. React JS for web projects offers a robust ecosystem and a strong community support system, making it easier to find resources and solutions to common issues. Moreover, React for frontend development is renowned for its performance benefits, ensuring that your web applications run smoothly and efficiently. The React framework benefits extend to its virtual DOM, which optimizes rendering and improves load times.

This makes React for developers an attractive option, particularly for those looking to build scalable web apps that can handle high traffic and complex functionalities. Additionally, React for modern web development is synonymous with flexibility and innovation, allowing developers to craft dynamic web applications with ease. For businesses, React JS advantages translate to faster development cycles and a more polished end product, making it a wise investment for any web project.# Why Choose React for Your Web Development Projects?

In the ever-evolving world of web development, choosing the right framework can make or break your project's success. One technology that has gained immense popularity and widespread adoption is React. If you've been wondering why React is the go-to choice for many developers and businesses, you're in the right place. In this blog, we'll dive deep into why you should choose React for your web development projects, covering its benefits, features, and recent advancements that make it stand out.

What is React?

React, also known as React.js or ReactJS, is an open-source JavaScript library developed by Facebook for building user interfaces, particularly for single-page applications. It allows developers to create large web applications that can update and render efficiently in response to data changes. React is component-based, which means you can build encapsulated components that manage their own state, then compose them to make complex UIs.

Key Benefits of React for Web Development

1. Component-Based Architecture

One of the primary React advantages is its component-based architecture. This approach allows developers to build reusable components, making the code more maintainable and scalable. Components can be nested, managed, and handled independently, which simplifies the development process.function Welcome(props) { return <h1>Hello, {props.name}</h1>; } function App() { return ( <div> <Welcome name="Sara" /> <Welcome name="Cahal" /> <Welcome name="Edite" /> </div> ); }

2. Virtual DOM for Optimal Performance

React's use of the Virtual DOM is a game-changer. Unlike the traditional DOM, the Virtual DOM allows React to update only the parts of the web page that have changed, rather than reloading the entire page. This results in faster and more efficient updates, improving the overall user experience.

3. JSX - JavaScript Syntax Extension

JSX, a syntax extension for JavaScript, enables developers to write HTML structures in the same file as their JavaScript code. This makes the code more readable and easier to debug. JSX is one of the standout React JS features that developers love.const element = <h1>Hello, world!</h1>;

4. Strong Community Support

React boasts a robust community of developers who contribute to its growth and improvement. This means you have access to a wealth of resources, tutorials, and third-party libraries to enhance your web projects.

5. SEO-Friendly

React's ability to render on the server side makes it SEO-friendly. By pre-rendering the initial state of your application on the server, you can ensure that search engines can crawl and index your content more effectively.

6. Rich Ecosystem

The rich ecosystem of React includes tools like Redux for state management, React Router for routing, and Next.js for server-side rendering. These tools provide a comprehensive solution for building modern web applications.

Why Choose React for Frontend Development?

1. High Performance

React's performance benefits are significant, thanks to its efficient updating and rendering process using the Virtual DOM. This ensures that your application remains fast and responsive, even with complex and dynamic user interfaces.

2. Scalability

React is an excellent choice for scalable web apps. Its modular architecture allows you to break down your application into smaller, manageable components, making it easier to scale and maintain as your project grows.

3. Cross-Platform Development

With React Native, you can extend the benefits of React to mobile app development. This means you can use the same codebase to build both web and mobile applications, saving time and effort.

4. Strong Backing

React is backed by Facebook, ensuring its ongoing development and support. This backing gives businesses confidence in the framework's longevity and stability.

5. Easy Learning Curve

For developers familiar with JavaScript, React has a relatively easy learning curve. Its straightforward API and component-based approach make it accessible to both beginners and experienced developers.

#webdevelopment #reactjs

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pitangent23 · 5 months ago

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Avoid Common Pitfalls: Hire Expert ReactJS Developers for Your Web App

Ensuring your web application stands out requires more than just a great idea. It demands seamless functionality, stellar performance, and a user-friendly interface. This is where the importance of Hiring Expert ReactJS Developers comes into play. ReactJS, a powerful JavaScript library developed by Facebook, has gained immense popularity for its ability to build dynamic and high-performing user interfaces. However, not every developer can harness its full potential. To avoid common pitfalls and maximize the benefits of ReactJS, it's crucial to hire expert ReactJS developers.

The Importance of ReactJS in Modern Web Development

ReactJS has revolutionized web development with its component-based architecture and virtual DOM capabilities. This means developers can create reusable components, leading to faster development times and more efficient code management. Additionally, the virtual DOM ensures high performance by minimizing direct interactions with the actual DOM, resulting in smoother and faster user experiences. With these advantages, ReactJS has become the go-to choose for building scalable and robust web applications.

However, leveraging ReactJS to its fullest requires a deep understanding of its intricacies. This is where hiring expert ReactJS developers becomes indispensable. Skilled developers can navigate through complex requirements, optimize performance, and ensure your web app is both responsive and intuitive.

Common Pitfalls in ReactJS Development

While ReactJS offers numerous benefits, there are several common pitfalls that can hinder the success of your web application if not addressed properly.

Let’s delve into these pitfalls and understand how expert ReactJS developers can help you avoid them:

1. Poor State Management

State management is a critical aspect of ReactJS development. Poorly managed states can lead to unpredictable behavior, performance issues, and a frustrating user experience. Expert ReactJS developers are well-versed in using state management libraries like Redux, MobX, or Context API to ensure your application’s state is handled efficiently and predictably.

2. Suboptimal Component Design

ReactJS’s component-based structure is one of its core strengths. However, designing components that are too large or too tightly coupled can make your codebase difficult to maintain and scale. Skilled ReactJS developers understand the principles of creating modular, reusable components that enhance the maintainability and scalability of your application.

3. Inefficient Rendering

ReactJS’s virtual DOM improves performance, but inefficient rendering can negate this advantage. Issues like unnecessary re-renders can slow down your application. Expert ReactJS developers use techniques such as memoization and shouldComponentUpdate to optimize rendering and ensure your web app remains fast and responsive.

4. Inadequate Testing

Testing is crucial to ensure the reliability of your web application. Inadequate testing can result in bugs and poor user experience. Proficient ReactJS developers employ robust testing frameworks like Jest and Enzyme to write comprehensive test cases, ensuring your application functions as expected across different scenarios.

5. Ignoring Best Practices

ReactJS has a vast ecosystem and community-driven best practices. Ignoring these can lead to suboptimal code and potential security vulnerabilities. Expert ReactJS developers stay updated with the latest best practices and industry standards, ensuring your web application is built on a solid foundation.

Why Hire Expert ReactJS Developers?

To avoid these pitfalls and ensure the success of your web application, it’s essential to hire expert ReactJS developers. Here’s why:

Deep Knowledge and Experience

Expert developers bring a wealth of knowledge and experience to the table. They understand the nuances of ReactJS and can tackle complex requirements with ease, ensuring your web app is both functional and efficient.

Faster Development Time

Skilled ReactJS developers can significantly speed up the development process. Their expertise allows them to write clean, efficient code, reducing the time required to bring your web app to market.

High-Quality Code

Quality is paramount in web development. Expert developers adhere to coding standards and best practices, ensuring your codebase is clean, maintainable, and free from bugs.

Performance Optimization

Performance is a key factor in user satisfaction. Experienced ReactJS developers know how to optimize your application for speed and responsiveness, providing a seamless user experience.

Scalability

As your business grows, your web application needs to scale accordingly. Expert developers design your application with scalability in mind, making it easier to add new features and handle increased traffic.

Conclusion

Hiring Expert ReactJS Developers is crucial for the success of your web application. They help you avoid common pitfalls, ensure high performance, and deliver a user-friendly experience. By investing in skilled developers, you can leverage the full potential of ReactJS and create a web app that stands out in the competitive market.

#Hire Expert ReactJS Developers

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amelia84 · 1 year ago

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Get The Right Reactjs Tooltip For Better Product Onboarding

So, Let's explore different types of tooltips in ReactJS, along with their benefits and potential drawbacks here

Custom Tooltip Component:

A custom Reactjs tooltip component in React offers full control over tooltip behavior and styling. This approach is highly customizable, making it suitable for projects with unique design requirements. Developers can implement complex interactions and animations as needed. However, it comes with some drawbacks.

Benefits:

Full control: Developers have complete control over the tooltip's behavior and appearance. This level of control is essential for achieving highly customized tooltip designs.

Customization: The tooltip can be tailored to match the project's specific design and branding, ensuring a seamless user experience.

Flexibility: Complex interactions, such as custom animations or dynamic content, can be easily implemented to enhance the user interface.

Drawbacks:

Development time: Creating a custom tooltip component can be time-consuming, especially if you need to account for various edge cases and interactions. This can impact project timelines.

Potential for bugs: Custom implementations may introduce more bugs if not thoroughly tested and maintained, leading to a less reliable user experience.

React-Tooltip Library:

React-Tooltip is a popular library for creating tooltips in React applications. It simplifies tooltip creation and provides cross-browser compatibility. While it's easy to use, it may have some limitations when it comes to highly custom designs.

Benefits:

Ease of use: React-Tooltip simplifies the process of adding tooltips to components, making it accessible for developers of all skill levels.

Cross-browser compatibility: It handles browser-specific quirks for tooltip positioning, ensuring a consistent experience across different browsers.

Customization: Developers can customize tooltip styles and behaviors to some extent, allowing for a personalized look and feel.

Drawbacks:

Limited customization: While React-Tooltip provides some customization options, it may not fully meet the requirements of highly unique or complex tooltip designs.

Dependency: Integrating React-Tooltip adds an external dependency to your project, which may increase bundle size and maintenance considerations.

Material-UI Tooltip:

Material-UI is a popular UI framework for React, and it includes a Tooltip component. This Tooltip integrates well with Material-UI's design system, providing a consistent look and feel.

Benefits:

Integration: Material-UI Tooltip seamlessly integrates with other Material-UI components, maintaining a cohesive design within Material-UI projects.

Accessibility: It ensures tooltips are accessible out of the box, addressing an essential aspect of web development.

Consistency: Developers can rely on Material-UI Tooltip for a consistent user interface, reducing the need for custom styling.

Drawbacks:

Limited to Material-UI: While ideal for Material-UI projects, Material-UI Tooltip may not be suitable for non-Material-UI applications that require a different design language.

Customization constraints: While customizable, Material-UI Tooltip may not fully accommodate highly unique or intricate tooltip designs.

Third-Party Libraries: Various third-party libraries and components are available on npm for creating tooltips in React. These libraries offer a wide range of features and styles.

Benefits:

Choice: Developers can choose from a variety of libraries that cater to specific needs, such as advanced animations, interactive tooltips, or unique styles.

Community support: Many third-party libraries have active communities, ensuring regular updates and support for common issues.

Drawbacks:

Learning curve: Learning and integrating a new library can take time, potentially slowing down the development process.

Potential bloat: Adding multiple libraries can introduce unnecessary code and increase bundle size if not managed carefully.

CSS Framework Tooltips:

For projects using CSS frameworks like Bootstrap or Tailwind CSS, tooltips can be easily implemented using predefined CSS classes.

Benefits:

Rapid development: This Reactjs Tooltip implementation is straightforward, as it involves applying predefined CSS classes to elements, saving development time.

Consistency: Tooltips automatically match the design language of the CSS framework, ensuring a cohesive user interface.

Drawbacks:

Limited customization: While efficient, CSS framework tooltips may not offer extensive design flexibility, limiting their suitability for highly custom designs.

Design constraints: Projects that diverge significantly from the framework's design language may find it challenging to adapt CSS framework tooltips.

Popper.js:

Popper.js is a versatile library for positioning popovers and tooltips. While not React-specific, it can be integrated with React to create custom tooltips with precise positioning.

Benefits:

Advanced positioning: Popper.js offers precise control over tooltip placement, accommodating complex UI requirements.

Versatility: It can be used for tooltips, popovers, and various other UI elements, making it a versatile choice.

Drawbacks:

Complexity: Implementing Popper.js can be complex, requiring a deeper understanding of positioning and the library itself.

Development effort: Customization and integration may take more time compared to using pre-built tooltip components.

Take Away

Choosing the right type of Reactjs tooltip for your React project depends on various factors, including project requirements, design constraints, accessibility considerations, and your team's expertise. React development services assessing these factors and weighing the benefits and drawbacks of each tooltip solution for your app, and help you make an informed decision that aligns with your project goals.

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forixcommerce · 1 year ago

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A Detailed Introduction to Magento Front End Developers

The arena of Magento development has changed drastically since the introduction of Magento 2 on November 17, 2015. Once valid, front-end certifications and frameworks have since then become obsolete.

By 2020 the web environment started seeing an increase in websites and services that were using reactive programming. The main purpose of using Reacting programming was to create PWAs to deliver superior user interfaces on mobile devices. This is where Magento front-end Developers come into place.

Who are Magento Developers?

Magento e-commerce developers are responsible for developing, maintaining, and improving the e-commerce websites of their clients.

As of 2023, there are more than 13,000 companies and agencies that provide Magento-based solutions. Additionally, there are 300,000 trained Magento developers worldwide providing robust solutions to help e-commerce businesses excel.

Before Magento 2 hiring any Magento developer would have helped you with your development but now Magento developers have segregated into two kinds: -

Back End Developers

Front End Developers

Who are Magento Front-End Developers?

The role and responsibilities of a Magento front-end developer vary from one business to another. However, their primary role is to create a user interface on ReactJS. Additionally, they create customized Magento themes, templates and layouts. Moreover, they are also responsible for modifying the appearance of certain pages and adding design-related configurations.

You may also like to read:

5 Common Magento Performance Optimization Problems Solved

Magento Speed Test

How You Can Speed Up Magento 2

How to choose an experienced Magento Front-End Developer?

As mentioned above the number of Magento agencies and professionals is rising day by day. This is why choosing an experienced Magento Front -end developer can be a taxing procedure. However, if you keep the below-mentioned points in mind it can make the selection procedure easier: -

1. Choose an experienced React.js developer: - Choosing an experienced professional comes with its advantages. Thus, an experienced front-end developer can help you build an appropriate PWA storefront on the JS framework.

However, you should also consider hiring a professional Magento back-end developer to make sure that there are no issues on the server side of your website.

2. Choose a skilled professional: - You should ensure that the developer that you are entrusting your website to is aware of at least one of the JavaScript frameworks so that they can create UI components for web as well as mobile apps.

They should know common markup languages such as HTML and CSS. Lastly, they should be aware of Magento PWA studio tools and other Magento customization techniques that can help you in creating a PWA storefront.

3. Choose a Magento full-stack developer: - This approach is preferred by small and middle-sized businesses. A Magento full-stack developer has strong expertise in Magento 2 and knows how to work with React.js. Moreover, they have several PWA projects on their portfolio so they have a lot of knowledge about how the Magento platform works.

4. Choose Magento 2 Certified Front-End Developers: - These developers are certified by Magento and need to possess front-end expertise. They are equipped to handle UI/UX customizations and theming components.

#Magento e-commerce developers

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react-development-krishna · 1 year ago

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Where can I find Top Reactjs Forums and Communities?

ReactJS development forums and communities can be an invaluable resource for developers of all skill levels, from beginners to seasoned experts. These vibrant online communities consist of enthusiastic members who share a common interest in ReactJS and actively engage in a wide range of discussions. From resolving code issues to sharing the latest ReactJS updates, these platforms serve as a robust support system, offering swift assistance and feedback on code snippets, project concepts, and the implementation of best practices in ReactJS development.

Explore some of the finest ReactJS forums and communities, highlighting their key features and explaining how you can make the most of your participation in these forums.

Visit: https://www.cronj.com/blog/top-reactjs-development-forums-and-communities/

#reactjs forums #reactjs communities

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codehunter · 1 year ago

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How to make react router work with static assets, html5 mode, history API and nested routes?

I thought I was starting to understand React Router, but I hit a new wall when adding a library that loads css for its components. Everything works fine when a navigate from my home, to the page containing the component, but when I refresh it, the urls of the fonts are broken...

I found some pointer here and here but no luck so far. Is this a common issue ? How to work around it ?

I use webpack dev server with default config built by a yeoman scaffolder.

The library I use is React Fa to display icons.

When I load my app on http://localhost:8000/ everything displays fine, then I navigate to http://localhost:8000/customer/ABCD1234/chat and my icons are ok. The font was loaded properly.

Then I refresh the page, and I see in the console :

DOMLazyTree.js?019b:56 GET http://localhost:8000/customer/ABCD1234/assets/926c93d201fe51c8f351e858468980c3.woff2

Which is obviously broken because the customer part shouldnt be here...

Here is my router so far :

ReactDOM.render( <Router history={browserHistory}> <Route path='/' component={App}> <IndexRoute component={Index}/> <Route path='customer/:id' component={Customer} /> <Route path='customer/:id/chat' component={CustomerChat}/> <Route path="*" component={ NotFound } /> </Route> </Router>, document.getElementById('support-app'));

I also tried adding a <base href="/"/> to my index.html, but I get a nice warning in red in the console, so maybe not the best idea :

Warning: Automatically setting basename using is deprecated and will be removed in the next major release. The semantics of are subtly different from basename. Please pass the basename explicitly in the options to createHistory

https://codehunter.cc/a/reactjs/how-to-make-react-router-work-with-static-assets-html5-mode-history-api-and-nested-routes

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digitalinfobytes · 2 years ago

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The 7 Best Web Frameworks For Building Web Apps

A web framework, also known as a web application framework, is a software technology that aids web application developers in the development of web applications. A web framework is a set of specifications for creating and deploying web applications. Web frameworks are designed to reduce the cost of common web development activities.

In recent years, the number of Web Frameworks has increased. We’ve compiled a list of the top 7 frameworks available on the internet to help you choose the best one for your Web application.

A website for your business is essential in this digital age. It enables your business to reach a larger audience and generate new leads more quickly. In comparison to a few years ago, the high demand for web application development has prompted the development of diverse functional frameworks.

These frameworks were built with today’s business considerations, and they provide a simple yet effective method to build web apps. There are so many benefits of having a customized web application for your business. Check out those in this article.

In this blog, we have focused on seven of the most effective web application development frameworks that are widely used and known to produce the best results. So, let’s get started!

7 In-Demand Web Application Development Frameworks

ASP .NET

ASP .NET is a Microsoft framework for developing scalable web applications for both PCs and mobile devices. It’s a simple and lightweight framework for creating .NET Web apps. This structure, in general, combines Performance, Output, and Efficiency.

ASP .Net has proven to be a powerful framework, backed by the power of Microsoft, from its very beginning.

ReactJs

React is a JS library developed by Facebook. React is a web framework that is primarily used to build single-page front-end applications. Aside from that, it facilitates the development of mobile applications, which most other frameworks do not.

React provides direct access to a variety of frameworks for routing, state management, and API connectivity issues.

AngularJs

Angular is a well-known front-end framework that is used by many web application development companies. Angular was first introduced in 2009, and its programming language is JavaScript. It was later updated in 2016 and now uses Typescript instead of JavaScript. Angular is well-known for its ability to generate dynamic web pages on the client side.

Because Angular is a large and all-encompassing framework with controllers, libraries, directives, and other components, it is more difficult to learn than other frameworks. Angular is an MVC (Model-View-Controller)-based framework that can be used to create high-performance single-page applications.

Hire AngularJs Developers now to build your next project!

ASP .NET Core

ASP.NET Core is a high-performance, cross-platform, open-source framework for building modern, cloud-enabled web applications. ASP.NET Core works in combination with popular client-side frameworks and libraries such as Blazor, Angular, React, and Bootstrap.

ASP.NET Core is used to build websites and applications, as well as Internet of Things (IoT) apps and mobile backends. You can use your favorite development tools on Windows, macOS, and Linux, deploy to the cloud or on-premises and run on.NET Core.

ExpressJs

Express is a Node.js API for building incredibly powerful web apps. Because of its increased versatility, it is primarily used by big enterprises.

It includes a plethora of built-in tools and functionality, such as third-party integrations, routing, templating, server-side scripting, and so on, that make creating functional apps possible. It also has a minimalist feel to it and is easy to use once you understand the complexities of the language.

NodeJs

Node.js is a JavaScript runtime environment, which is a platform for running JavaScript code on the server and making it portable. A runtime environment, in layman’s terms, is the context in which a program is executed.

Node.js has increased developer productivity by 68 percent, reduced development costs, and drastically improved app performance. This is the result of the Node.js framework being adopted and deployed successfully.

We utilize these web frameworks as a significant aspect of our tech stacks to give the best software solutions to our clients as a node.js development company.

C# is a powerful object-oriented .NET programming language that can be used to create cutting-edge websites and apps.

C# has several advantages, including performance, stability, and security, all of which aid in the achievement of a company’s objectives. C# technology enables easy access to and rapid implementation of technological solutions, both of which are important for today’s businesses.

As a result, clients can reduce their time to market while maintaining a technological advantage due to lower SDLC costs.

In the software development process, web frameworks are incredibly important. They each have their own set of strengths and limits. Depending on the project needs, each of them will give you the best possible outcome for your project.

Digital Info Bytes, one of the best web application development companies, will assist you if you’re not sure which one to choose for your project. Digital Info Bytes has extensive experience developing the best web applications for a wide range of market industries.

This article is initially published on Digital info Bytes!

#Web Frameworks #Web Application Development Framework #Front-end Framework

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incipientinfotech · 2 years ago

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Top ReactJS Developer Tools to Build High-Performance Apps in 2022-2023

Created by using Facebook, React started its ride so a JavaScript toolkit so much allowed engineers in conformity with sketch extraordinarily potent user interfaces.

Yes, React has the strong in imitation of be a amazing flooring because of creating extra proactive and muscular mobile then net apps. There are around 30 to forty more than a few React Developer Tools so much bear aided in the tremendous receiving or reliability on React.

React Developers might also usage React factors in accordance with gender reusable and isolated portions for a range concerning applications.

The equipment assist engineers along debugging, visibility, then overall performance within run-on after software creation. React is attached by using whole about the sizeable firms, which include Facebook, Tesla, Airbnb, Skype, yet others, due in accordance with its numerous features.

The similar is a listing regarding useful React Developer Tools that execute assist builders extend their productivity.

What is React? Why ReactJS?

Jordan Walke, a Facebook software engineer, advance launched React.js among 2011. React is a JavaScript toolkit as uses a component-based method after create declarative person interfaces (UIs). It can also keep used because of each internet or mobile apps or handle the consider layer. The most important goal over React is in conformity with remain comprehensive, quick, declarative, adaptable, then straightforward.

The peck is a term chronic after draw the common series on equipment ancient according to propagate a ReactJS application. React isn’t a framework; instead, it’s a library. This is due to the fact React is entirely worried including rendering UIs, leaving deep other details in imitation of the care of alone mobile applications development.

Users execute uses React to enhance reusable aspects so show records as much it modifications upon time. React Native is a tool so allows ye in accordance with assemble provincial cell apps together with React.

In ignoble words, React is a JavaScript mold because of reasoning, building, and maintaining stateless and stateful consumer interfaces. It utilizes HTML-like nodes referred to as React nodes to define and share a person interface between UI components declaratively. React nodes are subsequently transformed in a UI version format.The crucial question to that amount at last confronts to us is why we embrace ReactJS.

Out over a couple of open-source systems on hand of the need because front-end internet application development, ReactJS steers outdoors appropriate in conformity with its more than a few benefits. Let’s have a glance at the benefits regarding ReactJS above ignoble technologies and frameworks.

In the always changing front-end world, learning a recent fabric will become pretty a task, particularly when that fabric wish truly bear a useless end. So, salvo you’re looking for the subsequent greatest component but are getting misplaced in the framework swamp, we endorse donation ReactJS a try.

A temperate reasons in conformity with pick out ReactJS are enlisted here,

Virtual Document Object Model support

JSX together with Babel processor because of issue creation

Simpler in conformity with hold close together with component-based structure and well-defined architecture

Offers widespread articles reusability for cell app development

One-way data-binding with Flux controls as much application architecture

Automatic dependency injection with built-in repository

Stats inclosure ReactJS

Yes, we all are conscious about the popularity regarding ReactJS, how many such is useful, then how many the React developers are leveraging that for rising wondrous applications. And in imitation of again the amazingness concerning ReactJS, here are a temperate stats by using Statista.

What are ReactJS Dev Tools?

For the use of React easily, the React group has released an authentic React Dev Tools browser plugin because of Chrome, Firefox, then sordid browsers, as substantially simplifies debugging yet inspecting React apps. You do investigate the regimen and performance regarding anybody element then you whole mission together with these tools installed.

Frameworks, libraries, testing utilities, code generators, then debugging extensions are whole examples on React developer tools to that amount edit constructing React apps easier. React developer tools enable us to draw cleaner, extra robust, and stable articles while rescue time all through development.

Yes, React has the potent in imitation of keep a magnificent podium because of creating more proactive as much well as much muscular mobile yet internet apps. There are approximately 30 in conformity with 40 a range of React developer equipment as bear aided among the great taking yet reliability over React.

Why do ye necessity React Developer Tools?

Now, the next thing so would possibly bear popped upon within you thinking is what is the real want regarding React Dev Tools, right? Well, here are partial about the benefits concerning using React Developer Tools so perform provide thou a clear vision earlier than searching through half regarding the beneficial ReactJS developer tools.

Allows handy inspection yet debugging about applications with ease

Debugging any uncommon thing by permitting exam concerning props, hooks, states, etc.

Seamless set up over ReactJS Dev tools between browser including convenient reach

Easily exchange then explore special component states without hindering sordid components

Quick appear at base React factors performed for the page together with the “components” tab

Detailed and rapid profiling according to become aware of every overall performance bug

“Profiler” score among React Dev Tools approves noticing on re-renders summary

Which React Components are necessary of ReactJS?

A aspect is some of React’s imperative building pieces. To put on that some other way, some React application thou want according to propagate is essentially a build-up about components. Components redact growing user interfaces a brush easier. You may break down a person interface within distinct elements yet assignment of to them one by one before combining to them every between a parent component. This mother or father element is thy remaining UI.

In React, elements basically return JSX articles so tells where must stand shown over the screen. Basically, even are joining sorts about elements to that amount are important between ReactJS.

1. Functional components

A practical aspect is basically a JavaScript function as is manufactured between React. The useful aspects be able remain without difficulty made between React by using composition preferred JavaScript functions. As compared according to the type components, the useful factors are quite easy and much less powerful as like that has solely some render() method. One execute utilizes functional aspects then those are nicely aware regarding its undertaking then to that amount the feature does now not require any interaction together with other components.

2. Class components

Being a tad pain more complex than purposeful components, category factors are in synergy with mean components as like well. Data perform keep exceeded among a variety of type components. For creating class components, JavaScript ES6 lessons are chronic within React. Class elements are Herculean as those perform skip data, props, etc. so inputs, engage with mean class components, or furnish preferred outcomes extra efficiently.

Top ReactJS Developer Tools

Now, let’s hold a seem at incomplete on the best ReactJS Developer Tools to that amount are popular amongst the developers then loved by means of the customers as well.

1. React Developers Tools

The equipment that conduct the list regarding excellent ReactJS Dev Tools in React Developers Tools extension. These tools be able stay old for both debugging and rising React applications. React Developers Tools is reachable as much an expansion because both Chrome or Firefox. You want in conformity with simply installation it yet a total hunch about tabs seems because of ye according to inspect, debug, be brought a visible representation of re-renders, and more.

React Developer Tools lets you explore React tree’s props, state, issue hierarchy, state, etc. One aspect pretty impacts the lousy aspects here. React Developers Tools completely assist the React hooks according to assign you get right of entry to after the React purposes barring too growing a class. Its filter strategies allow navigating deep within nested hierarchies easier.

Features of React Developers Tools

Easily themeable because of customization

Offers interaction monitoring efficiently

Has profiler because rapidly debugging performance

Multiple convenient alternatives in imitation of engage inside the console

Offers the perfect level of transparency between source articles viewing

2. Create React App

The 2d ReactJS Dev Tool to that amount stands over our list is the Create React App through Facebook. This device is quite popular among the React developers then has a whooping 88k+ stars concerning GitHub. The only reason because of this React Dev Tool after lie then popular is its handy unaccompanied command React app setup. Yes, you may without problems accept over a new venture except somebody requirement about build configurations, assignment structure, supported modules, etc., as like this tool gives ye the whole lot ready.

The Create React App optimizes the challenge because production, creates a developer environment, then gives a front-end construct pipeline because programmers. React developers perform store period by the usage of someone programming speech because back-end development with this tool.

Features about Create React App

Offers provincial development server

Support ES6 and ES7 capabilities including in-built Babel preset

Easy asset earning beside JavaScript modules because bundling about files chronic between thine app

Efficient styling including effortless CSS imports

Running one tests along Jest then re-running them concierge of lawsuit over any changes

ESLint according to discover mistakes at some point of the development stage

3. Reactide

Reactide is a normal tool that comes to idea so we suppose concerning React Dev tools. It is the close popular devoted IDE for React net development. React’s accomplishment benefit is its solitude beside the platform. Because the browser has an built in server then simulator, thou perform load aspects except having in conformity with configure and build them. It offers ready-to-use modules so much don’t require someone manual formal then exterior construct tools.

Reactide is a cross-platform laptop application so simplifies the procedures with the aid of automating the translation concerning the React project within the browser so a single React JSX file is opened. Reactide has an built-in node server, a simulator, then extra according to avoid you reliability over the server settings yet built-in tools. With its live illustration over the mission architecture, Reactide also provides visual editing capabilities. Due according to the GUI features, getting remarks beside the browser simulation is less complicated than ever.

Features concerning Reactide

Hot module reloading because of previewing

Highly compatible terminals because commands, workflows, etc.

Easy thing visualization

Structured or streamlined aspect for rapid understanding

Custom browser stimulator

Extensible improvement environment with integrated Node server

4. Storybook

Using complicated components, React allows thou in accordance with beget an intuitive person interface. This good presents a sandbox because growing UIs that are wonderful beyond you enterprise logic. The sandbox is ancient to boost elements as much a playground.

As sandbox shops the factors so stories, it’s known as storybooks. There are data within each story. The visual test case may lie used in accordance with compare each state. A representation is essentially a characteristic to that amount generates price yet is displayed about screens.

Storybook is a consumer interface diagram tool (UI). It is used by means of React developers to create, develop, then take a look at user interface components, or such serves so each a UI aspect playground or a development environment. Storybook enables builders in conformity with edit usage about the UI element improvement environment by means of allowing them in accordance with quickly check or display theirs work.

Features regarding Storybook

Easy or quick setup & configuration

Components are made in isolation

Highly interactive and robust UI delivery

Rapid UI building backed including more than one add-ons

Allows creation & show off of factors into interactive environment

Streamlines the documentation together with UI improvement then testing

5. CodeSandbox

If you bear a constrained volume regarding area about you laptop and PC then are looking because of an on-line solution, articles sandbox is the pathway in conformity with go. You execute usage the online sandbox after articles then build your application.

CodeSandbox is a wide-spread on-line articles editor. This React application completely automates actions certain as much bundling, transpiling, then dependency management, namely properly namely allowing you in imitation of begin a current task including solely one click. It lets in you in imitation of quantity the URL on you task together with others therefore up to expectation those may consult it. Its live preview feature permits you in accordance with consult the outcome regarding your code as much you kind it. It lets in thou in conformity with uses anything sort regarding NPM dependency thou desire.

You may additionally quickly discover whether a library mill yet section data the usage of this platform. This online code performer is well matched along all JavaScript projects, however it provides a number of React-specific capabilities. It has the capacity to down load the React venture between a template known as create-React-app, because example.

Features concerning CodeSandbox

On-the-go facility in imitation of strengthen React application online

Saves tons on space

No set up required

NPM support

Live cooperation for efficient development

Search, discovery, or embedding

Static file for consideration web hosting because of reliability

6. React-Proto

The time period “prototype” is abbreviated as like “proto” among React-Proto This device allows developers according to build an application architecture out of the ground up. Proto substances the application files wished because similarly development, and builders start together with a visible design. It afterward assists builders into defining ReactJS houses and states. This React developer device is perfect because of React builders who are extra involved between visible plan than coding. It approves ye in imitation of strengthen prototype person interfaces with the aid of dragging then shedding instead about literature code.

This, however, does not suggest so much you be able strengthen an app’s user interface except writing a single row regarding code. It gives developers the prototyping equipment she need. You may additionally note all main elements out of a photograph the use of React proto, as well as set up properties, names, or a hierarchy over the components. Export the factors between auto-generated code afterward thou hold them all. Later on, thou may trade the code.

Features regarding React-Proto

Easily design, create, drag, or resize components

Visualize utility architecture

Define props or state

Specify aspects hierarchy

Easy integration over new structure within preceding projects

7. Evergreen

Evergreen is a broad then open-source JavaScript mold as does now not supply a preset configuration. In turn, that permits customers according to propagate current structures that attach the layout requirements. This framework is completely managed by the creation then maintenance about segments.

And that definitely aligns with React as that offers fair React factors award customers fulfilled monitoring when needed. Whether that was the ultimate decenniad then the current one, it’s inevitable for the apps to seem to be decent. In Evergreen, the React components are shaped concerning the pinnacle of the React User Interface Primitive in imitation of acquire countless composability. Evergreen also usage a resolve UI graph speech because net applications.

Features about Evergreen

Easy setup and implementation

Perfect for aesthetic lovers

In-depth documentation

Highly composable then flexible

8. React Boilerplate

React Boilerplate is code chunks so much can remain reused throughout more than one projects. A boilerplate is a kind on template as thou can makes use of including younger yet no changes. You can propagate you own boilerplate and take advantage of one offered through the community. However, proviso it is thy forward time, you’ll near probable utilizes build-React-app (CRA), a package deal as makes that easy according to begin a React.js project. Because that has a baby number about capabilities then dependencies, ye do learn the basics together with it.

You’ll get a challenge together with countless aspect picks proviso you makes use of create-React-app, certain namely Babel then Webpack. That’s the whole lot you’ll necessity in imitation of be brought commenced the usage of React. You execute Gather something regarding assert if you need in imitation of use extra modules yet libraries.

Features regarding React Boilerplate

Supports potent imports

Complete aid because of CSS documents and CSS modules

React Router because of routing support

Code splitting because potent imports

9. React Sight

If ye would kind of in conformity with confer thine React software as like a flowchart, React Sight is the formality React Dev Tool for you. This device has a live factor hierarchy arbor shape after notice your projects. React aspect is a easy yet light-weight platform.

All libraries, such as redux, React-router, or React fiber, are well suited along that React tool. When ye loiter you mouse over the nodes, you’ll see connections according to aspects as desire leading thou directly after the tree.It’s a chrome add-on so lets in thou according to accomplish obligations associated to React inspection.

Install React Sight afterward putting in the React developer equipment development about Chrome. React Sight suggests ye thine React app’s whole issue hierarchy grower into real-time. It also factory together with redux, React fibre, yet React-router. Ensure so much “Allow get entry to according to file for consideration URLs” is enabled because of both React aspect or React developer tools so executant provincial file for consideration URLs. Install the Chrome extension, run the React app, and visit a React-based website.

Features on React Sight

Open-source and convenient according to learn

Gives speed a full-size boost

Deviation is prevented along in-built filters

No set up and setup is required

10. Rekit

Rekit is an all-in-one answer toolkit so much makes use of React, Redux, or React-router in imitation of build modern, scalable online apps. Rekit develops programs or provides venture administration solutions because programmers, such namely Rekit Studio. This application consists of a command-line interface as nicely so equipment because managing actions, components, pages, or reducers.

Instead on attitude with full-size libraries, patterns, configurations, yet so on, Rekit allows thou in accordance with focal point regarding enterprise logic. Create-React-app-bootstrapped-app-bootstrapped-app-bootstrapped-app-bootstrapped-app-bootstrapped-app-bootstrap

You’ll additionally hold get admission to according to numerous useful project administration tools with Rekit, kind of the Rekit Studio, as gives a comprehensive overview regarding every the components, pages, or reducers. Use that tool within alliance with Create React App!

Features concerning Rekit

Provides production-ready solutions

Allows renaming yet deletion over the Redux actions

CLI and net interface because assignment management

Supports whole the trendy versions on dependencies, React 15.6, React Router 4, etc.

11. React Cosmos

This React development tool is a one-stop-shop for developing reusable components. React Cosmos is focused regarding improving every aspects over React development, whether small yet large. It analyses the components yet permits ye in imitation of perform them together with any context, state, then props ye want. When related according to running instances, such approves ye in conformity with see what features alternate within real-time.

React Cosmos improves element format including surface dependencies. It requires you in imitation of define you sane factor inputs, who makes debugging yet UIs extra predictable. React Cosmos is a improvement environment because of developing high-quality, scalable person interfaces. It permits you according to construct UI element libraries then increase React factors in isolation.

Features of React Cosmos

Robust for long-term design

Offers full-size thing library

Provides laser focus

Surface dependencies because improving UI

12. Bit

Bit is a free yet open-source React Dev Tool. This tool is lovesome because of building then distributing React components. Bit enables thou in conformity with assemble your React application so a collection concerning detach aspects (a early concept after construct scalable React apps). Bit additionally offers you get right of entry to after theirs third-party marketplace, where you might also inquire because then download components born through others, below customise them in imitation of joint your project. Obviously, that is quite excellent due to the fact thou won’t have after begin beside zero.

It has automatic techniques because of creating components, composition unit tests, then adding documentation, then it sharply supports React yet React Native. It factory flawlessly along Micro Frontends then takes ponderabil about the problems of code sharing within applications.

Features over Bit

Commands are easy in imitation of learn and pick

Integration yet expansion are simple

Language agnostic

Allows working aspects discoverable

13. Why did ye render?

This is the biggest tool in imitation of try agreement ye want after debug the conduct on thine component. Because the factors are now not always easy, such is integral because of developers according to understand so in conformity with render yet re-render them. This is mainly true if thou are current in conformity with React development.

The Why Did You Render device notifies thou then avoidable renderings are activated or why. Both React then React Native grant a function known as why-did-you-render to that amount notifies builders respecting useless issue re-renders. This lets in us to rapidly decide in which way yet so our factors re-render, who is quintessential because troubleshooting overall performance issues.

Features regarding Why did ye render?

Helps after avoid components re-render

Identifies the era yet motive of re-render

Helps into grasp the conduct of components

A grace because beginners

14. Belle

Belle is a React Dev Tool as is very customizable and comes with every of the essential factors pre-installed. TextInput, Toggle, Date Picker, Rating, Card, Button, Select, or and about – you’ll arrive to them all, yet they’re every fully customizable.

Those factors work of each and every device, which include mobile, tablet, and desktop. Belle is a retinue concerning customizable React components that are simple after use. It allows programmers in accordance with quickly conjoin Button, Card & Select, ComboBox, Rating, TextInput, and Toggle aspects in conformity with theirs applications.

Belle holds its respect amongst ignoble ReactJS Dev Tools as like that affords encapsulated factors yet in-built cellular support. Also, Belle objectives in accordance with advance the superior UI/UX then fulfill the aspects definitely configurable after allow customers in imitation of experiment.

Features of Belle

Mobile or laptop well matched components

Highly customizable

Isolated modification about each component

Allows handy formal about wretched patterns because entire the components

15. Redux

Redux is a famous JavaScript container up to expectation shops an application’s ruler among a save up to expectation perform stand accessed and old by way of some component. The Redux Toolkit is a valuable device because of programmers so much necessity according to improve Redux logic quickly.

Redux is essentially a keep because of storing the regime over your app’s variables. Redux establishes a set regarding methods then rules for interacting along the store, making sure as factors functionate now not exchange then read the keep at random. In a nutshell, Redux is a capacity in conformity with control “state,” and a cache yet storage up to expectation execute stay accessed in a systematical behaviour through entire components. It have to be accessed by using a “Reducer” then “Actions” system.

Features of Redux

Stores the international administration concerning thine application inside a alone keep of an object tree

State is by means of non-appearance read-only

Pure reducers then functions are old for erection changes

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Tap into the top 1% brain throughout the globe from India

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Manage, lay out and control thy remotely hired ReactJS developers.

Final drink of React Dev Tools

We learned in relation to 15 React Developer Tools of that composition so much helps us construct a coherent code. These equipment consist of everything out of browser extensions after libraries together with APIs and descriptive person interfaces because creating React apps. These equipment permit us in conformity with construct more muscular and maintainable articles while additionally rushing on development.

Hopefully, this contemporary React developer equipment pleasure perform creating, managing, debugging, yet documenting apps less complicated for you. All concerning the React tools listed over are back in accordance with develop web applications, beget visuals, yet compile code, amongst lousy things. These tools, of the ignoble hand, slave not idolize a singular objective. You do mix to them in conformity with create a complementary effect.

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megabadriganesh-blog · 4 years ago

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Reactjs-Using Proxies with Redux Types

One of the most common problems that I run into when using Redux is trying to figure out why an action is not being captured by a reducer. For someone just getting starting with Redux, debugging this issue can be especially overwhelming because of how Redux manages data flow. So before you start pouring over configuration code, or the logic contained in your action creators and reducers, please, make sure your action types are defined and spelled correctly.

In any application that I have built, most bugs that I have run into are simply due to typos. However, the solution to this particular problem is harder to spot because no errors are raised when the application is run. Take a look at the snippet below.

// actionTypes.js export const FETCH_FILE_REQUEST = 'fetch_file_request'; export const FETCH_FILE_SUCCESS = 'fetch_file_success'; export const FETCH_FILE_FAIL = 'fetch_file_fail'; // filesReducer.js import { FETCH_FILE_REQUEST, FETCH_FILE_SUCESS, FETCH_FILE_FAIL } from '../actions/actionTypes'; const filesReducer = (state = {}, action) => { switch (action.type) { case FETCH_FILE_SUCESS: return { ...state, file: action.payload }; default: return state; } } export default filesReducer;

Assuming we dispatched an action with type FETCH_FILE_SUCCESS, the filesReducer should catch the action before the default case is returned. But what if that is not happening? Where do we start the debugging process? There does not appear to be anything wrong with the code in the reducer; the action type was imported and matches the case in the switch statement. There are no errors in the browser. Where is the issue?

You may have noticed that I misspelled SUCCESS in filesReducer.js, but the reason this can be hard to catch is that importing undefined types does not cause an error, so when we import FETCH_FILE_SUCESS, its value is actually undefined, so our reducer always hits the default case.

It would be nice if the existing import/export system could help us catch this. Unfortunately, since action types are just strings, validating their existence is challenging. Luckily, we have another option.

Enter

Proxies

Proxies are a feature of ES2015 that allows us to customize operations on an object. They can be used in many different ways, and you can find some useful examples here and here. For our problem, this example from Mozilla looks promising:

So if proxies can be used to validate that properties assigned to an object are of a certain type and value, we should definitely be able to ensure that our action types are never undefined, or else throw an error that will be easy for us to fix. Let’s refactor our actionTypes.js file.

// actionTypes.js const types = { FETCH_FILE_REQUEST: 'fetch_file_request', FETCH_FILE_SUCCESS: 'fetch_file_success', FETCH_FILE_FAIL: 'fetch_file_fail' } const typeValidator = { get(obj, prop) { if (obj[prop]) { return prop; } else { throw new TypeError(`${prop} is not a valid action type`); } } } module.exports = new Proxy(types, typeValidator);

First, we define an object containing all our action types. Then we define our validator handler type validators. The get method inside our handler is called a trap and provides access to the properties of an object. If the property we are looking for, an action type, in this case, exists in the types object, return that prop, unmodified. Otherwise, throw an error because the prop does not exist.

Finally, export a new proxy, passing the types object as the target and the type validator as the handler. However, it is important to note that the ES2015 module system does not work well with proxies, so module. exports and require() must be used for exporting and importing the types.

Barely any code needs to change in the reducer and action creator files, but in order for the action types to be imported successfully, we just need a couple lines of code in a new file:

// actionTypesProxy.js export const { FETCH_FILE_REQUEST, FETCH_FILE_SUCCESS, FETCH_FILE_FAIL, } = require('./actionTypes'); // in the reducer and action creator files // change '../actions/actionTypes' to // '../actions/actionTypesProxy'

By creating a proxy to verify the existence of an action type, we no longer have to worry about correctly naming a property upon import because an error will be thrown in the browser console as soon as the application starts. So, reduce the number of headaches you get when developing an application using Redux and start using proxies.

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adadevacademy · 6 years ago

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Teaching Inheritance

by Dan Roberts, Lead Instructor

Not one of them is like another. Don't ask us why. Go ask your mother. -- Dr. Seuss

Think back to when you were learning your first object-oriented programming language. If you learned to program in the last 15 years, there's a good chance that was your first language, period. You probably started off with simple concepts like conditionals and loops, moved on to methods, and then to classes. And then at some point your instructor (or mentor or tutorial video) introduced a concept called inheritance.

If you're like me, your first exposure to inheritance was a bit of a mess. Maybe you couldn't quite get a handle on the syntax. Or maybe you were able to make it work on the class project and pass the exam, but couldn't quite figure out where you would ever use this in the real world. And then once that introductory course was over, you probably packed inheritance back up into your mental toolbox and didn't use it again for a long time.

The fact is, inheritance is complicated. It's hard to use correctly, even for experienced engineers - it took me several years in industry before I felt like I had a good handle on the subject. Yet inheritance is a tool with first-class support in most modern languages, and which is taught to many novice programmers almost immediately.

In this blog post I'll dive into why teaching inheritance is hard, some of the problems with current methods, and what Ada Developers Academy is doing to try and address this problem.

Do We Need Inheritance?

The first question we should ask is, "do we really need to teach inheritance?" This might seem like a silly question - everyone teaches inheritance, it's a key part of object-oriented programming! However time is a scarce resource in a program like Ada's, and everything we do teach means there's something else we don't teach. We've found more often than you might expect that we can drop something that "everyone" does, and end up with a leaner curriculum that is more valuable to both our students and their employers.

But as it turns out, we do need to teach inheritance. This is due to the way we leverage frameworks like Ruby on Rails and ReactJS later in the course. Both Rails and React use inheritance at a fundamental level, and our curriculum wouldn't make sense without it. Moreover, inheritance is an important technique for building real-world software, and our graduates use it on a regular basis in the wild.

Whether inheritance should be taught to novices who don't have an immediate need for it, for example in the first year of a 4-year university program in CS, is a different question. It's also not a problem I'm being paid to solve / write a blog post about. We know that the curriculum we cover at Ada does need inheritance, so we can confidently move forward with our analysis.

What it Means to Teach Inheritance

I have heard using inheritance when writing software compared to using a lathe as a craftsperson. Both solve a certain class of problem extremely well, and neither is particularly useful if you don't have that problem. Both lathes and inheritance take a fair bit of training to use well, and both are liable to make a big mess if used incorrectly. Every machine shop has a lathe, and most modern programming languages support inheritance.

The lathe metaphor allows us to break down the problem a little more. Thinking about it this way, we can see that any curriculum on inheritance needs to address two types of questions.

How do you use inheritance? What specific syntax do you need, and how does that change the way information flows through your program? What rules do you need to keep in mind as you work (e.g. Liskov substitution, the open-closed principle)? These questions are more mechanical, and the answers are often language-specific.

When should you use inheritance? How do you identify that a problem is likely to be neatly solved by inheritance, or that inheritance is a poor choice? What are the tradeoffs involved in deciding whether or not to use inheritance? These questions are more theoretical, and the answers are likely to apply no matter what language or framework you use.

Thinking about these questions leads us to two main issues that make teaching inheritance difficult:

The syntax and semantics of inheritance are tricky

Problems that are well-suited to inheritance are complex

Let's dive into each of these a little deeper.

Programming with Inheritance is Tricky

One of the main reasons teaching inheritance is hard is because inheritance itself is hard. At a high level inheritance is easy to explain: one class gets all the code from another class, and can override pieces and add its own bits. As so often happens, the devil is in the details.

For example, with Ruby the following questions arise:

Are static methods inherited? Can they be overridden?

How are instance variables, class variables, and class-instance variables handled?

Can constants be overridden? If not, what should you do instead?

How does inheritance interact with nested classes?

What has precedence, methods from the parent class or from a mixin?

And that's for Ruby, which is supposed to be beginner friendly! Other languages have their own wildcards:

Python: multiple inheritance

JavaScript: prototypical inheritance model, multiple types of functions

Java: static typing and explicit polymorphism, interfaces, templating

C++: all the Java problems plus memory management and object slicing (shudder)

Whatever language you choose, there's going to be a lot of rules to remember. How do you encode all these, especially for a novice? How do you decide what to include up-front, what to put in the appendix, what to omit entirely? How do you introduce specific details while still keeping the discussion general enough to translate to other languages? This is an important part of the problem - all your theoretical knowledge of how inheritance is used and what kinds of problems it solves won't do you any good if you can't apply it in code.

Fortunately, this part of the problem of teaching inheritance is well-understood. There are many excellent texts that round up the complicated syntax and semantics of inheritance into digestible, intuitive chunks. Any alternative treatment of inheritance needs to acknowledge this challenge and build upon this existing work.

Problems that Need Inheritance are Complex

The other reason that teaching inheritance is hard is because problems that benefit from inheritance tend to be complex. At a minimum, a problem to be solved with inheritance needs:

Two or more domain objects that are similar enough they need to share code, but not so similar that they could be combined into one class

Enough other things going on that it's worth encapsulating the domain objects as classes in the first place

That's a non-trivial amount of complexity, especially for a classroom full of beginners. How can you reasonably build a school project that establishes this complexity, but still fits within the tight time limits of the course? This is where existing curriculums tend to break down.

One tool that springs to mind to address this challenge is scaffolding, possibly by implementing some portion of a project in advance. This allows an instructor to reduce the complexity of the work required of the student, without reducing the complexity of the problem space as a whole. Deciding exactly what and how much to scaffold requires us to do a little more research, so we'll come back to this problem later.

How is Inheritance Used?

Since Ada is a workforce development program, one of the most valuable things we can do is ask "what's going on in industry?" Specifically,

How is inheritance used in the real world?

How is inheritance most likely to be used by a junior engineer in their first year or so on the job?

Understanding how inheritance is used can give us some direction on how it should be taught. Let's look at a few examples.

Rails

In Rails, almost every class you write will inherit from something. The two most common are

ActiveRecord::Base for models

ActionController::Base for controllers

You also see inheritance used for everything from database migrations to configuration management - its the Rails Way™. If you want to do something, you inherit from a class somewhere in the Rails framework. These superclasses are generally quite abstract, and each covers some functionality specific to the domain of an MVC framework.

Another important idiom is the template method pattern, as made famous in the Gang of Four book. A great example of this is with database migrations, where you define an class that inherits from ActiveRecord::Migration and implement the change method, and Rails takes care of the rest. Controller actions also mimic the template method pattern, particularly if your application uses the builtin tools for RESTful routing.

For the most part, Rails does not have you define your own superclasses. The exception to this is ApplicationRecord and ApplicationController, which sit in the hierarchy between concrete models or controllers and the abstract Rails implementation - these are generated automatically by Rails, but are open for you to modify.

React

React isn't quite as broad in its use of inheritance as Rails. However, every component class inherits from React.Component.

In React we again see the template method pattern pop up. Whether you're implementing render or componentDidMount, React knows the algorithm and you fill in the details.

React also does not encourage defining your own superclasses. In fact, their official documentation is rather explicit that inheritance between components should be avoided.

Other Frameworks

Rails and React are the two industry-grade frameworks I'm most familiar with, but I've dabbled in some others, namely Android (Java) and Unity (C#).

Android follows a similar pattern: everything you write inherits from some builtin class, template methods abound, and developers are discouraged from building their own inheritance relationships.

Unity matches the pattern as well, but they seem to be more lenient about extending your own classes, at least as far as I can tell from the Unity documentation on inheritance.

Industry Experience

This matches my experience of how engineering work tends to be done. Design work, in this case identifying the abstraction and building the superclass, is done by the team as a whole or by someone with an impressive sounding job title like "principal consulting systems architect". Implementing the details in a subclass is the job of an individual engineer.

Concretely, as I was spinning up at Isilon I spent a lot of time working on C++ and Python classes that filled in the details of an existing pattern, and not a lot of time inventing new patterns. Template methods were something I used frequently without having a name for them, and which I later wished I had learned about in college.

Summary

Setting Use case Write subclasses Write superclasses Abstract classes Template methods Rails Web servers ✅ ❌ ✅ ✅ React Single-page applications ✅ ❌ ✅ ✅ Android Mobile apps ✅ ❌ ✅ ✅ Unity Video games ✅ ✅ ✅ ✅ First year in industry Any or none of the above ✅ ❓ ✅ ✅

There are a few clear takeaways from this quick survey:

Inheritance solves a complex problem. Programs that benefit from inheritance tend to be fairly large

Writing a subclass is much more common than writing a superclass

Often the superclass is provided for you by whatever framework you're using

Superclasses tend to be abstract, both semantically (embodying a high-level concept) and functionally (never instantiated)

The template method pattern is extremely important

Existing Work

We've built an understanding of what a new engineer needs from an introduction to inheritance. How well does existing computer science curriculum match up with this?

Building Java Programs

We'll use a case study to demonstrate: the excellent Building Java Programs: A Back to Basics Approach by Stuart Reges and Marty Stepp. This text is used by many introductory CS courses, including the University of Washington, as well as by AP CS classrooms supported by the TEALS program. My first exposure to the book was while teaching with TEALS back in 2014.

Building Java Programs does an great job introducing the vocabulary and syntax of inheritance.

The first example is different types of employees in an HR system. This is simple enough to demonstrate syntax while still somewhat plausible - not an easy balance to strike.

The text includes a discussion of where inheritance is not appropriate, and the difference between is-a and has-a relationships.

The chapter introduces interfaces, abstract classes and abstract methods, and the ability to override a method. However, it makes no mention of the template method pattern.

The chapter finishes with a more complex example dealing with different types of stocks and assets.

This is substantial enough that inheritance is an appropriate technique.

In this example, the pieces at the top of the hierarchy are abstract (an interface and an abstract class), matching the pattern identified above.

The book does not provide any context for how this code will be used. I would argue this is a major oversight. Writing code in a vacuum is fine for experienced engineers, but in my experience novices benefit from concrete examples of how code will be used from the "outside". With inheritance in particular, this would demonstrate how polymorphism is useful.

There is no mention of the idea of extending a class implemented by a framework.

In general Building Java Programs is excellent, and I have a tremendous amount of respect for Reges and Stepp. It certainly did a good job of preparing my students for the AP CS exam. However, it does not introduce inheritance as it is used in the real world, particularly by novice engineers. As far as I can tell this is typical of introductory CS courses - certainly my undergraduate education at Purdue followed a similar pattern.

Design Textbooks

There is another type of text that addresses inheritance: books on software design. Famous resources like Practical Object-Oriented Design: An Agile Primer Using Ruby (POODR) by Sandi Metz, or Design Patterns (the "Gang of Four" book) by Gamma, Helm, Johnson and Vlissides address software design more generally, employing inheritance as one tool among many.

However, these books are targeted at experienced engineers trying to up their game, not at novices learning their chosen language for the first time. Moreover they discuss design from a ground-up perspective, whereas an engineer beginning their career is likely to build on the shoulders of giants, extending existing designs rather than inventing new ones.

An ideal curriculum would bridge the gap between these two approaches, introducing both syntax and common inheritance idioms, and getting new engineers used to the work of extending an existing class.

Ada's Approach to Inheritance

The instructional team at Ada has been unhappy with our approach to inheritance for a while now, but we haven't quite known what to do about it. Now that we've done some research and formalized our engineering and pedagogical intuition, here's the approach we've come up with:

Simple examples and accessible metaphors are fine for introducing syntax and semantics, though as Reges and Stepp demonstrate they don't have to be completely unrealistic.

Common idioms like abstract classes and the template method pattern should be introduced as soon as the basic syntax is understood.

Students' first serious inheritance project should involve extending an existing superclass.

This matches the way inheritance is used in the real world, and makes the benefits (not having to re-write a bunch of code) immediately clear.

Instructors would provide the following scaffolding:

Superclass implementation

Driver code demonstrating polymorphism

Another subclass, to model the inheritance mechanism

Possibly a test suite or test stubs

If time permits, a second inheritance project would focus on design, and have students build both the superclass and subclasses, as well as driver code.

At Ada, the first inheritance project takes the form of OO Ride Share. Students are asked to load information about drivers, passengers and trips from CSV files; we provide a CsvRecord superclass and Passenger and Trip subclasses pre-built. We feel this problem is complex enough to justify inheritance but simple enough to spin up on quickly. It also mimics the way ActiveRecord is used in Rails, which will hopefully lead to more comfort and deeper understanding once we get into our Rails unit.

The second project is still in the planning phase, but the idea is a command-line app that integrates with the Slack API. After an in-class design activity students will implement a Recipient superclass that handles most of the API interaction, and User and Channel subclasses that fill in the details. They will also build a command loop that interacts with the user, demonstrating the power of polymorphism. We don't have the project write-up finished yet, but there is a prototype of the end product.

We've spent a lot of time thinking about this fresh approach to teaching inheritance, and I'm excited to see the results. Watch this space for an update in a couple months as we conclude our Intro to Ruby unit and move into Rails.

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rodolfodavis · 2 years ago

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4 Best Practices for ReactJs Developers to Handle Error Messages

Are you one of the professional ReactJs developers or just kick-starting your career? Regardless of your experience level, you may face React error messages at some point during the development process.

Even a highly-proficient developer may end upwriting codes that lead to error messages. After all, mistakes are bound to happen. But what’s more important is how to handle these issues.

Traditionally, ReactJs developers used to follow a tedious approach to address error messages. For example, when they encounter the errors, the next step was searching them on Google. Finally, they fixed them as per the instructions provided by an expert online.

Thanks to continuous advancements in technology, we have hassle-free solutions to development errors. However, looking for solutions every time you find errors in your code is a time-consuming process. To sort things out, our experts made a list of the common error messages and solutions to fix them. But before we start, you need to know how to display a React error message.

What does it take to display an error message in React?

It is essential to show React error messages accurately. After all, it plays a crucial role in error handling. Until these errors are visible, you cannot resolve them. One of the easiest ways to display them is to have a state for storing them.

For example, use this state:

errorMessage: const [errorMessage, setErrorMessage] = useState('');

When a React developer, freelancer or on-site developer comes across an error message, they update it to errorMessagestate: setErrorMessage('Example error message!');

After this, the developer uses React’s conditional rendering to show the error message. For this, they can write an inline conditional statement, such as:

{errorMessage&& ( <p className="error"> {errorMessage} </p> )}

In the end, they will have a button that displays the React error message with one click.

With this, you just learned how to display an error message in React application. Now, it is the right time to discover the typical error messages and the solutions to address them efficiently.

Tips for ReactJs developers to handle error messages

Each child in a list must have a unique Key prop

Avoid using Array index in Keys

Do not call React Hooks conditionally

An infinite loop of re-renders

ReactJs development services providers take the item of an array and leverage a component for rendering. It is done according to the item’s content. Luckily, we have JSX to embed the logic into the component with an Array.map function. As a result, it sets out the intended components from the callback.

But during this process, you may meet with a warning in your browser console. The caption is, “Each child in a list should have a unique Key prop.” If you are a novice ReactJs developer, you will need time to learn to add a unique “Key” prop to every child. Until then, you can use this solution to address the error.

Solution:

The warning suggests that there should be a Key prop to each element of the JSX. To do so, you need to meet the following requirements:

The Key should be a number or a string.

It should be unique to each item.

It should represent the item in the list throughout renders.

If you fail to stick to these requirements, your ReactJs app will not crash, but you may face unexpected performance and behavior issues. React lets you discover which Key has the problem. Depending on this, you can fix the error. If you wish to become one of the highly proficient ReactJs Developers, master error fixing practices.

Another warning related to Keys is preventing using an array index. Such errors can occur when a developer becomes habitual of using the Key prop in each child list.

In some cases, your data might not have a unique identifier. So, using the index in the list is an easy solution. But using an array index as a Key prop is not reliable because it fails to represent an individual item across renders.

For example, you have a list of items that users use to interact. If they remove the second item, it will not affect the underlying DOM structure of the first one, as evidenced by its Key, which remains at 0. The same applies to the third and beyond. The Key prop from other items will undergo modifications, as they depend on the array index.

However, ReactJs will compute the structure again, assuming that items have changed. As a result, it will affect performance adversely while causing inconsistent states. How do top ReactJs developers handle this error? Keep reading for a solution.

Solution:

Before you fix this, it is essential to know that Keys need not to be identifiers. Any Key will work as long as it is unique and represents the DOM structure.

As a React developer, freelancer or on-site professional, you can optimize code in various ways. But you should know that you can execute specific code in the code branches when necessary. For instance, it is useful when you come across time-consuming or resource-heavy code. Consequently, it boosts performance significantly.

During the implementation of this optimization technique, you may run into a warning. It says – you should not call the React Hooks conditionally. Instead, it must be called in the same order in all component renders.

Why is it necessary?

React has an internal order that calls Hooks to watch over the underlying states. Also, it preserves these states between renders.

What will happen if you mismanage this order? In this case, React may mismatch the state with the Hook. It may result in bugs in the application.

Solution:

The best way competent ReactJs developers address this error message is by calling React Hooks at the top-grade components. Plus, it should be unconditional.

Managing infinite loops is a nightmare for every developer. As a professional delivering ReactJs development services, you cannot escape this. But you have an advantage that React identifies the instance of too many re-renders and notifies you about the same. Hence, you can fix it before the application becomes unresponsive.

Solution:

According to the warning, your component stimulates several re-renders, which is problematic. You face this issue when a component queues countless state updates in a short span. Here are some reasons that cause infinite loops, such as:

If you perform state updates in the render directly.

If you fail to provide the correct callback to an event handler.

So, whenever you receive this warning, the first thing to check is if these two aspects are working fine. That is what an experienced and skilled ReactJs developer would do.

In closing

When developing ReactJs applications, you can come across the error messages we discussed above. The errors are inevitable, but if you know what to do, you can fix these issues and restore your application. On the other hand, neglecting these warnings can cost you big time. Also, enterprises hire ReactJs developers with proficiency in all aspects of web development like coding, deploying, debugging, etc.

So, whether you are an on-site or freelance React developer, you should understand these error messages. After all, they are a crucial part of the React app development process.

If you want to read more topics like this to improve your skills, contact SoftProdigy. We have a team of expert ReactJs developers and on-site programmers who are committed to delivering top-notch services. Learn and grow your skills with us!

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