Castore  DeRose

Castore DeRose

1574388252

Top 10 Tips and Tricks for Reactjs Developers in 2020

All right, folks — it’s time for another piece to help you improve your React game, become better React devs, write better code, and excel at coding interviews.

1. Use React Hooks In Functional Components

Hooks were introduced in React v16.8 and are a huge boost for functional programming within React. With Hooks you can, and should, make use of functional components instead of class components. But wait…functional components and state? And what’s with lifecycle methods?

Have no fear — React Hooks have that covered for you. Let’s see some examples:

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This was the traditional way of using a class. With hooks, we can now do i using the useState Hook, like this:

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Looks easier? It is! We’re using the useState Hook to set the initial state to an empty String (‘’) and it returns an array with the current state (value) and a method to mutate that state (setValue). We are also using array destructuring to get access to value and setValue.

Functional components don’t have access to lifecycle methods by default. But now we have Hooks and the useEffect Hook comes to our rescue. First, the traditional way, using a class:

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Here’s the same example making use of the useEffect Hook:

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How awesome is that? useEffect will aways run when one of the values in the passed array (value) changes.

These are just two examples of using React Hooks — there are more out there. You can even create your own custom hooks. In my opinion, every ReactJS Dev should learn this concept!

2. Use The React Context API For Passing Props

Maybe you’ve experienced a situation where you have deeply nested components and a need to pass down props from the higher to the lower tier, with some components sitting in the middle, just letting those props pass. Instead of editing each component in the chain, you can make use of the React Context API.

In this example, we create a new context in a separate file like this:

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Then we need to wrap the parent element, hence the highest tier from where we want to distribute props with the provider we created:

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Now, all of the ParentComponent’s children have access to auth as a prop. How cool is that?

Now, all we have to do is to consume the context in a child component. I’ll make use of functional components and the useContext Hook to do so:

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If there were more child components nested, they would have access to the context as well. Awesome!

3. Styled-Components

Styled-Components belong effectively to the CSS-in-JS libraries that abstract the CSS to component level, using just JavaScript to describe styles. They can be created via the ES6 Template Literal Notation using back-ticks like this:

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Now you have a custom-styled button component that you can use all over your application, instead of the normal HTML button. All styles are encapsulated and won’t interfere with other styles in the DOM. Pretty sick, right?

4. React Fragments

For a long time, you had to wrap everything in a return statement into a single div for react to render it correctly in the DOM or make use of array notation.

For example:

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With the introduction of React Fragments you no longer have to use either of these methods. Instead, you can do something like this:

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Or, since Babel 7, even something like this:

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5. Use Error Boundaries

Having errors in your application is one thing but if they appear in the view at the very least they should not break the whole application. For this case “Error Boundaries” have been implemented into React. These are basically components that you can use to to wrap other components. They catch errors during rendering and in lifecycle methods down the tree. Via the componentDidCatch method (note that there’s no React Hook for this yet so you have to use a class-based component) you can then react to the error and render a fallback or log the error. Here’s a short example:

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You can now use the ErrorBoundary component like this:

https://miro.medium.com/max/1306/1*3rmd_T0dgXTjMu_WGP4jog.png

6. React and Typescript

Typescript is a really hot topic and one of the developers’ top choices for learning in the near future. With the newer versions of create-react-app (CRA) it comes with built-in Support for Typescript. You just have to add the typescript flag when creating a new project with CRA, like this:

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The key benefits of using Typescript with React are:

  • Latest JavaScript features available
  • Interfaces for complex type definitions
  • VS Code was made for TypeScript
  • Readability and Validation to avoid bugs during development

Here’s a simple example of using TypeScript in a functional React Component:

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And with an interface:

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If you want to learn something new in 2020, definitely give TypeScript a go!

7. Jest and Enzyme for Testing

Every dev should test their applications — it is mandatory in many corporations. Testing React apps can be really cool with the right setup. A widely-used setup consists of Jest and Enzyme. Take a look!

Jest comes bundled with the create-react-app by default and is a test runner, assertion library, and mocking library. It also provides snapshot testing, which basically creates a rendered snapshot of a component that will automatically be compared to previous snapshots. If those two don’t match, the test will fail.
This is really cool for unit and integrations tests but what about real components of your React App? Enter Enzyme, a testing library for React Components developed and maintained by Airbnb and the ideal partner for Jest.

With these libraries in place we can do neat tests like this:

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This tests the basic rendering behaviour of one of our components. But we can do even more. For example, testing for props:

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This looks awesome, right? There is so much more you can do with this setup like mocking API calls or testing lifecycle methods…

8. Conditionals in JSX

Writing JSX is really cool and one of the main features of React. To improve your capabilities you can make use of the following trick.

Instead of using this:

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You can do a short-circuit evaluation like this:

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9. Higher-Order Components

Higher-Order Components (HOC) are an advanced React concept used to abstract shared code to make it accessible where needed. The concept is similar to higher-order functions in JavaScript — HOCs take components and return components but they are not components themselves; they are functions. On an abstract level it looks like this:

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A good example is “connect” from Redux. A more practical example could look like this:

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At first we create the HOC (colorizeElement) with an element that keeps all its props and gets a new prop for the color (blue). We can then use that HOC to create a new, blue-colored button like this:

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Looks cool, doesn’t it?

10. React DevTools

React DevTools is a cool browser extension available for Chrome and Firefox and maintained by the Facebook React Core Team. Version 4 came out in August 2019 — this extension is really useful for any React dev.

It works well with React and React Native and really helps you understand what happens inside your react App.

What’s really cool, and you may not be aware of this, is that some big companies like Airbnb and Netflix are using React. If you visit their websites you can find information about their sites in your browser console if you have the React DevTools installed:

It’s always nice to see what the big players are doing. The same thing can be applied to Redux DevTools!

Bonus: Must-have VS Code Extensions for React Devs

All right, you have made it all the way down to this point, now it’s time for a little bonus! I’ve identified some of the best VS Code Extensions for React Devs.

ES7 React/Redux/GraphQL/React-Native snippets

A really cool extension with almost four million downloads. It brings you tons of code snippets for React, Redux and GraphQL.

Jest and Jest Snippets

Two extensions that harmonize perfectly with Jest and provide you snippets for better testing

Typescript React code snippets

A cool extension that’s helpful if you work with Typescript and React.

While these are some extensions specifically for React development, you should also use the more general ones. I have written an article about the 10 VS Code Extensions that Front-End Developers Should Know in 2020, make sure to check those out as well!

Conclusion

Well, everything has to come to an end and this is it for this piece. I hope I could give you some insights to help you become better React devs, whether you’re just starting out or you’re already an experienced developer. I would love to hear your opinions, so feel free to leave a comment.

Thank you !

#React #JavaScript #Programming #Technology

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Top 10 Tips and Tricks  for Reactjs Developers in 2020
Ray  Patel

Ray Patel

1619518440

top 30 Python Tips and Tricks for Beginners

Welcome to my Blog , In this article, you are going to learn the top 10 python tips and tricks.

1) swap two numbers.

2) Reversing a string in Python.

3) Create a single string from all the elements in list.

4) Chaining Of Comparison Operators.

5) Print The File Path Of Imported Modules.

6) Return Multiple Values From Functions.

7) Find The Most Frequent Value In A List.

8) Check The Memory Usage Of An Object.

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Top React JS App Development Company in USA | React JS Services

Hire ReactJS app developers for end-to-end services starting from development to customization with AppClues Infotech.

Are you looking for the best company in USA that provides high-quality ReactJS app development services? Having expertise in building robust and real-time mobile apps using React Native Library.

We can fully support your specific business idea with outstanding tech skills and deliver a perfect mobile app on time.

Our ReactJS App Development Services
• Custom ReactJS Development
• ReactJS Consulting
• React UX/UI development and design
• App modernization using React
• React Native mobile development
• Dedicated React development team
• Application migration to React

For more info:
Website: https://www.appcluesinfotech.com/
Email: info@appcluesinfotech.com
Call: +1-978-309-9910

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Byte Cipher

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ReactJS Development Company USA | ReactJS Web Development Company

ByteCipher is one of the leading React JS app development Companies. We offer innovative, efficient and high performing app solutions. As a ReactJS web development company, ByteCipher is providing services for customized web app development, front end app development services, astonishing react to JS UI/UX development and designing solutions, reactJS app support and maintenance services, etc.

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Top 10 React Native App Development Companies in USA

React Native is the most popular dynamic framework that provides the opportunity for Android & iOS users to download and use your product. Finding a good React Native development company is incredibly challenging. Use our list as your go-to resource for React Native app development Companies in USA.

List of Top-Rated React Native Mobile App Development Companies in USA:

  1. AppClues Infotech
  2. WebClues Infotech
  3. AppClues Studio
  4. WebClues Global
  5. Data EximIT
  6. Apptunix
  7. BHW Group
  8. Willow Tree:
  9. MindGrub
  10. Prismetric

A Brief about the company details mentioned below:

1. AppClues Infotech
As a React Native Mobile App Development Company in USA, AppClues Infotech offers user-centered mobile app development for iOS & Android. Since their founding in 2014, their React Native developers create beautiful mobile apps.

They have a robust react native app development team that has high knowledge and excellent strength of developing any type of mobile app. They have successfully delivered 450+ mobile apps as per client requirements and functionalities.
Website: https://www.appcluesinfotech.com/

2. WebClues Infotech
WebClues Infotech is the Top-Notch React Native mobile app development company in USA & offering exceptional service worldwide. Since their founding in 2014, they have completed 950+ web & mobile apps projects on time.

They have the best team of developers who has an excellent knowledge of developing the most secure, robust & Powerful React Native Mobile Apps. From start-ups to enterprise organizations, WebClues Infotech provides top-notch React Native App solutions that meet the needs of their clients.
Website: https://www.webcluesinfotech.com/

3. AppClues Studio
AppClues Studio is one of the top React Native mobile app development company in USA and offers the best service worldwide at an affordable price. They have a robust & comprehensive team of React Native App developers who has high strength & extensive knowledge of developing any type of mobile apps.
Website: https://www.appcluesstudio.com/

4. WebClues Global
WebClues Global is one of the best React Native Mobile App Development Company in USA. They provide low-cost & fast React Native Development Services and their React Native App Developers have a high capability of serving projects on more than one platform.

Since their founding in 2014, they have successfully delivered 721+ mobile app projects accurately. They offer versatile React Native App development technology solutions to their clients at an affordable price.
Website: https://www.webcluesglobal.com/

5. Data EximIT
Hire expert React Native app developer from top React Native app development company in USA. Data EximIT is providing high-quality and innovative React Native application development services and support for your next projects. The company has been in the market for more than 8 years and has already gained the trust of 553+ clients and completed 1250+ projects around the globe.

They have a large pool of React Native App developers who can create scalable, full-fledged, and appealing mobile apps to meet the highest industry standards.
Website: https://www.dataeximit.com/

6. Apptunix
Apptunix is the best React Native App Development Company in the USA. It was established in 2013 and vast experience in developing React Native apps. After developing various successful React Native Mobile Apps, the company believes that this technology helps them incorporate advanced features in mobile apps without influencing the user experience.
Website: https://www.apptunix.com/

7. BHW Group
BHW Group is a Top-Notch React Native Mobile App Development Company in the USA. The company has 13+ years of experience in providing qualitative app development services to clients worldwide. They have a compressive pool of React Native App developers who can create scalable, full-fledged, and creative mobile apps to meet the highest industry standards.
Website: https://thebhwgroup.com/

8. Willow Tree:
Willow Tree is the Top-Notch React Native Mobile App Development Company in the USA & offering exceptional React Native service. They have the best team of developers who has an excellent knowledge of developing the most secure, robust & Powerful React Native Mobile Apps. From start-ups to enterprise organizations, Willow Tree has top-notch React Native App solutions that meet the needs of their clients.
Website: https://willowtreeapps.com/

9. MindGrub
MindGrub is a leading React Native Mobile App Development Company in the USA. Along with React Native, the company also works on other emerging technologies like robotics, augmented & virtual reality. The Company has excellent strength and the best developers team for any type of React Native mobile apps. They offer versatile React Native App development technology solutions to their clients.
Website: https://www.mindgrub.com/

10. Prismetric
Prismetric is the premium React Native Mobile App Development Company in the USA. They provide fast React Native Development Services and their React Native App Developers have a high capability of serving projects on various platforms. They focus on developing customized solutions for specific business requirements. Being a popular name in the React Native development market, Prismetric has accumulated a specialty in offering these services.
Website: https://www.prismetric.com/

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Top 10 Professional Angular JS App Development Companies

Now, the digital world needs to develop apps with interactive & high-level functionalities. When it comes to developing a dynamic single-page app, AngularJS is the most successful & famous front-end framework. Besides building interactive apps, it can develop any kind of web apps.

Searching for the AngularJS development company is not difficult, but picking the best one, which carries out business on a specific requirement & value is quite a difficult task.

Accordingly, I have compiled a list of the top 10 professional AngularJS development companies, known for their distinct range of AngularJS development services.

1. AppClues Infotech

AppClues Infotech is a leading AngularJS development company in USA & India that offers the best quality dynamic apps for clients. They work on the overall perseverance, diligence & enthusiasm of the experienced app developers. It offers the complete web & mobile app development service to excellence. Its highly experienced Angular developers can deliver the promises of expertise, quality, and intellectual capital and develop apps that meet the client’s expectations.

· Founded - 2014

· Avg. Hourly rate – $15 to $25

· Employees - 100 – 250

2. Angular Minds

This leading web app development company has created several innovative web apps based on front-end technologies like AngularJS & NodeJS. With the help of well-experienced Angular developers, the company leads app development in an optimized way. Its developers are passionate to provide excellent web, mobile & cloud solutions to clients worldwide embracing next-generation technologies that can meet customer’s requirements with the most positive trends.

· Founded - 2011

· Avg. Hourly rate - $25 to $50

· Employees - 50 – 100

3. Clarion Technologies

Clarion Technologies is an outstanding company to carry out your development with the best technology platforms. It is the most reliable & cost-effective web & mobile app development company for SMEs. With skillful developers, Clarion has delivered complex web apps for different sectors using advanced frameworks like AngularJS & NodeJS

· Founded - 2000

· Avg. Hourly rate - $25 to $50

· Employees - 250-500

4. Fugenx

Fugenx is one of the leading mobile app & game development company. By a distinct array of mobile app development solutions, its programmers gained extensive expertise in Android, iOS & web app development. It aims to deliver the most reliable services to the clients with an expert team of designers, programmers & testers who perform their best to meet the client’s requirements.

· Founded - 2008

· Avg. Hourly rate - $25 - $50

· Employees - 250-750

5. IndiaNic

IndiaNic is one of the top AngularJS development company and has been well-known for developing advanced AngularJS solutions for enterprises with advanced front-end needs. With the knowledge and experience of using AngularJS in various elements of front-end development, its Angular developers help businesses gain the required control and scalability with app development services.

· Founded - 1998

· Avg. Hourly rate - $20 to $40

· Employees - 250-750

6. Algoworks

The expertise of Algoworks lies in handling app development challenges. It aims to utilize all the excellent features of AngularJS and make the apps agile friendly and dynamic. Its AngularJS developers & programmers are highly skilled in all advanced web technologies & frameworks. Moreover, its transparent business processes support that each project is delivered on time.

· Founded - 2006

· Avg. Hourly rate - $25 to $50

· Employees - 50 – 250

7. Codiant

Codiant offers the best-customized solutions for web & mobile app development. It delivers premium angular-powered solutions for a wide range of businesses. The company brings together the most skilled Angular developers, quality assurance engineers, web designers, and business analysts in one place to make sure their clients acquire everything in one place.

· Founded - 2010

· Avg. Hourly rate - $20 to $50

· Employees - 250 – 750

8. Noto Solutions

With the extremely skilled & expert development team, Noto Solutions delivers the best in class AngularJS app development. This professional angular development company focuses primarily on fulfilling customer needs. With widely experienced developers, the company provides fascinating results for the entire development. It will provide you a precise solution to build your web apps in an extremely short period.

· Founded - 2007

· Avg. Hourly rate - $25 to $50

· Employees - 50 – 250

09. WeblineIndia

The specialists at WeblineIndia carry the web-proven Angular-powered solutions. With vast experience, the Angular developers easily understand the clients’ requirements and strive to reap the maximum benefits provided by the AngularJS framework. The company promises top-notch web app development to cater to the clients’ business specifications when providing customized solutions with its AngularJS experts.

· Founded - 1999

· Avg. Hourly rate - $15 to $30

· Employees - 50 – 250

10. Mind Inventory

When it comes to web & mobile app solutions, Mind Inventory offers a top-notch solution with innovative & advanced technologies. It additionally offers other emerging technology services like AR, Wearable & IoT app development.

· Founded - 2011

· Avg. Hourly rate - $25 to $50

· Employees - 50 – 250

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