React Practice Test

React Practice Test



React (also known as React.js or ReactJS) is a front-end JavaScript library for creating user interfaces or UI components that is free and open-source. Facebook and a community of individual developers and businesses maintain it. React can be used to create single-page or mobile applications as a foundation. React, on the other hand, is solely concerned with state management and rendering that information to the DOM, so constructing React apps frequently necessitates the usage of extra frameworks for routing and client-side functionality.


Candidates’ knowledge of programming using the React/ReactJS library and their ability to leverage commonly used programming patterns are assessed in the React online test. It’s an excellent React assessment for pre-employment screening. A proficient React developer should be able to solve problems both with the React library and with the React approach of solving problems.

Why should you learn React?

The most powerful frontend library for developing View parts from MVC is React. Here are some of the reasons:

• Small Learning Curve: All web developers are already familiar with javascript, therefore there isn’t much to learn.        It’s not difficult to pick up. Those without a web development background or who are new to web programming          must first learn javascript. Specifically the ES6 version of javascript.

• Component-based architecture: Component-based architecture allows you to split down complicated applications    into small, contained sections that are much easier to construct, manage, test, and debug.

• Fast: React applications are quick. It renders and re-renders applications quickly and keeps track of the most            recent data changes.

• React is Scalable: React-based applications are faster, resulting in a better user experience. At the end of the day,      the performance of your application is what makes your users happy.

• React has a fantastic community: With a strong community comes a wealth of resources; there are thousands of      videos, tutorials, and blog posts accessible to help you learn and construct any form of React application.

ReactJS Developer Skills

Technical Skills:

• Strong knowledge of JavaScript, object models, DOM manipulation and event handlers, data structures, algorithms,    JSX, and Babel.

• Complete knowledge of ReactJS and its core concepts, such as JSX, Virtual DOM, component lifecycle, and so on.

• Experience with ReactJS workflows such as Flux, Redux, Create React App, and data structure libraries.

• RESTful APIs/GraphQL, HTML/CSS, ES6 (variables and scoping, array methods), code versioning systems such as    GIT, SVN, etc., popular frontend development tools, CI/CD tools, DevOps, performance testing frameworks such as    Mocha, Node + NPM

• A bachelor’s degree in computer science, information technology, or a related field is preferred.

Soft Skills:

• Ability to translate business needs into technological specifications
• Team player with an open mind who is eager to receive comments and provide suggestions.
• Time management, project management, communication, and interpersonal skills are all important.
• Ability to write clean, concise code that adheres to guidelines and best practices
• Willingness to learn new tools and techniques in today’s world
• Problem-solving and troubleshooting abilities are essential.
• Accountability and creativity

React Developer Training

Learn React JS with these tutorials and courses, which contain both free and paid learning resources and are appropriate for beginners, intermediate learners, and experts. Here are the best React online course:

       1. Learn React 16 – The Complete Guide (incl. React Router 4 & Redux) (Udemy)
       2. React Certification – Full-Stack Web Development (Coursera)
       3. Best React JS Course : Modern React with Redux (Udemy)
       4. React Courses and Classes Online (Pluralsight)
       5. The Complete React Web Developer Course (with Redux)
       6. Learning React.js Training Course (Lynda – LinkedIn Learning)
       7. React.js Essential Training (Lynda)
       8. Advanced React and Redux Tutorial
       9. Node with React Tutorial: Fullstack Web Development
       10. The Complete React Native and Redux Course

Best React Native Books

1. Hands-On Design Patterns with React Native
2. React Native Cookbook – Second Edition
3.JavaScript Everywhere: Building Cross-Platform Applications with GraphQL, React, React Native, and Electron 1st        Edition
4. React Native for Mobile Development
5. React Native in Action: Developing iOS and Android Apps with JavaScript
6. React and React Native – A complete hands-on guide to modern web and mobile development with React.js, 3rd        Edition

Career Opportunities

Certified React Developers have a large and rising number of career opportunities. To find React developers are required in a variety of businesses and geographies. However, you will need to do more than only learn React JS abilities to be successful in your job.
The following is a list of some of the top firms where most front end developers want to work and offers jobs for react developer:

       • Facebook
       • Twitter
       • Netflix
       • Yahoo
       • Dropbox
       • The New York Times

React Developer Salary

In the United States, the average React native developer salary is $120,000 per year, or react developer hourly rate is $61.54. Starting salaries for entry-level occupations start at $100,000 per year, with the highest-paid professionals earning up to $151,125 per year.

React Native Salary ranges for react js developers by area:

New York $142,350
Georgia $135,000
New Jersey $131,625
California $130,000
Massachusetts $128,700
Iowa $127,725
Illinois $126,750
Arizona $121,875

React Engineer Salary

Job Title

Annual Salary

Monthly Pay

Weekly Pay

Hourly Wage

Senior React Developer

$138,517

$11,543

$2,664

$66.59

React Engineer

$130,000

$10,833

$2,500

$62.50

Senior React JS Developer

$127,822

$10,652

$2,458

$61.45

Javascript React Developer

$126,484

$10,540

$2,432

$60.81

React Native Engineer

$125,833

$10,486

$2,420

$60.50

Frequently Asked Questions


What is a react native Software Engineer?

A React Native engineer possesses a unique combination of JavaScript and native platform expertise, making them an invaluable asset to any company looking to expand their product’s reach across numerous platforms. React Native makes use of basic JavaScript abilities while allowing a developer to target both iOS and Android at the same time.

Is there a freelance jobs Reactjs?

You’ll have the option to choose your own React native developer jobs with Fortune 500 organizations and startups as a freelance Developer, as well as the flexibility to work remotely on your own terms and have a remote react jobs.

How much React freelance jobs earn?

React developers often charge between $81 and $100 per hour, depending on where they are located. A developer may charge differently for React jobs depending on the expected duration.

How to use React app performance test?

There will be a tab called “Profiler” under the React Developer Tools tab. To begin recording performance statistics, click the record button, and then click the “Stop” button once you’ve finished using your app.

What is a React constructors?

In a class, the constructor is a method for initializing an object’s state. A React component’s constructor is called before the component is mounted. You must call super(props) function before any other statement when implementing the constructor for a React component.

How to use React profiler?

1. In the Profiler tab, click the Record button.
2. Continue as usual with your application.
3. To complete the recording, press the Record button once more (You may also have a separate Stop button to finish recording based on the browser you use).

Can React native be used for web?

React Native for Web is a React DOM and React Native compatibility layer. It may be utilized in web-only and multi-platform apps, as well as new and existing apps. React Native for Web makes use of React DOM to render JavaScript code that is compatible with React Native on a web browser.

Is React bootcamp online worth it?

Yes, attending a React native bootcamp is worthwhile. Web development is a complex and in-demand sector that is in desperate need of more talented programmers. Knowing how to use a popular language like JavaScript in conjunction with tools like React offers up a world of possibilities.

How to learn React fast?

1. Create a conducive environment. The first step is to build up an environment that at the very least supports JSX,        the XML-like syntax that most React programming uses.
2. Install the React Browser Extension.
3. Take a look at the tutorial.
4. Go over the React documentation.
5. Begin your testing.

What is a date picker in React native?

React Native DatePicker is an Android and iOS datepicker. It has picker modes for date, time, and datetime. The datepicker can be customized and works in a variety of languages. To obtain the greatest possible look, feel, and performance, it’s written in native code.