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React.js Test
Test duration:
35
min
No. of questions:
12
Level of experience:
Entry Level/Mid/Senior

React.js Test

The Reactjs online test helps tech recruiters and hiring managers to evaluate candidates’ skills. The React.js assessment helps hire for various job roles, including React.js Developer, JavaScript Developer, Front End Developer, React.js Consultant, and Fullstack Developer. Our tests help build winning teams by increasing the interview-to-selection ratio by up to 62% and reducing hiring time by up to 45%.

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React.js Online Test

Today, front-end frameworks and libraries have become essential to modern web development. React.js is an open-source JavaScript library that has gradually become the go-to framework for modern web development. With React.js, developers can create large web applications that use data and change over time without reloading the page. iMocha's React.js online test uses scenario-based MCQ and AI-LogicBox questions to evaluate the understanding of the React component lifecycle.

‍Two important use cases for Reactjs Online Test

‍#1 Identifying job-fit candidates based on job roles‍

You can create customized skill assessments for any given job role. Using this feature, you can choose questions from different skill types, including functional, technical, and soft skills. For example, with our customized Reactjs assessments, you can evaluate candidates’ knowledge of Mounting Method, React Facts, Password Principles, Handling Events, and Communication Skills and assess the best individuals for the job.

‍#2 Skill-gap analysis of your employees

iMocha allows you to measure employees' skill competency through Reactjs training assessments. It determines the existing skill level and identifies the areas for growth. It also measures the knowledge and impact of the training and traces individual employees’ progress. For example, you can use our Reactjs training assessments to identify a consultant’s knowledge about Handling Events, React Facts, and other skills and perform a skill gap analysis.

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How it works

Test Summary

React Developer test helps employers to hire job-fit candidates quickly, making unbiased employee performance appraisal decisions, reducing mass recruitment hassles, and more. Questions on mounting method, render function, password principles, and component optimization also helps you assess candidate's React JS skills. Our React JS coding test can be taken online by candidates from anywhere irrespective of timezone.

‍The Reactjs skills test helps you to screen candidates possessing the following skills:

  1. Thorough understanding of React.js and its core principles.
  2. Ability to develop user interface components and implementation using popular React.js workflows such as Flux or Redux.
  3. Excellent knowledge of core web fundamentals like HTML5, JavaScript (DOM manipulation and the JavaScript object model), and CSS3.
  4. Familiarity with server-side scripting knowledge and interfacing.
  5. Strong experience working with data structure libraries.
  6. Use our React.js assessment test or ask us to create a custom-made test including a skill set as per the job description.

Our different types of React.js online test will help you assess candidates' specific skills. These assessments are created by React.js specialists using their industry experience. Example: questions are on topics including Mounting Method, Render Function, Component Optimize, Handling Events, Default Values for Properties, etc.

You can pick the questions you like or request us to create more questions if required.

Useful for hiring
  • React.js Developer
  • JavaScript Developer – React.js
  • Front End Developer – React.js
  • React.js Consultant
  • Fullstack Developer – React.js
Test Duration
35
min
No. of Questions
12
Level of Expertise
Entry Level/Mid/Senior
Topics Covered
Shuffle

Mounting Method

Mounting method means putting elements into the DOM. React.js has four built-in methods that gets called, in this order, when mounting a component: constructor(), getDerivedStateFromProps(), render(), componentDidMount().

Render Function

The React function takes two arguments, HTML code and an HTML element. The purpose of this function is to display the specified HTML code inside the specified HTML element.
Shuffle

Password Principles

Here are some of the password principles you should follow to secure your React applications: Secure basic authentication of your React app, make sure that the HTML code is resilient, use allow list/blocklist and validation while URL parsing, and Implement a Web Application Firewall (WAF).
Shuffle

Component Optimize

In React, function components and PureComponent provide two different ways of optimizing React apps at the component level. Function components prevent constructing class instances while reducing the overall bundle size as it minifies better than classes.
Shuffle

Default Values for Properties

The defaultProps is a React component property that allows you to set default values for the props argument.
Shuffle

Handling Events

Just like HTML DOM events, react can perform actions based on user events. React has the same events as HTML: click, change, mouseover etc.
Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.
Question type
Multiple Answer
Topics covered
Fragments
Difficulty
Medium

Question:

Q 1. How do you create a component with multiple elements and no parent?
<Fruits />

const Fruits = props => [
<div key="apple">Apple</div>,
<div key="orange">Orange</div>
];

const Fruits = props => (
<React.Fragment>
<div key="apple">Apple</div>
<div key="orange">Orange</div>
</React.Fragment>
) ;
const Fruits = ['Apple', 'Orange'].map(fruit => <div key={fruit}>{fruit}</div>);

A helicopter view of the employee's progress
Test Report
You can customize this test by

Setting the difficulty level of the test

Choose easy, medium, or tricky questions from our skill libraries to assess candidates of different experience levels.

Combining multiple skills into one test

Add multiple skills in a single test to create an effective assessment and assess multiple skills together.

Adding your own
questions to the test

Add, edit, or bulk upload your coding, MCQ, and whiteboard questions.

Requesting a tailor-made test

Receive a tailored assessment created by our subject matter experts to ensure adequate screening.
Book a demo
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FAQ
How is Reactjs online test customized?
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What are the certifications required for this role?
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What are the most common interview questions for this role?
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What are roles and responsibilities of React developer?
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What are the required skillsets of React developer?
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