Back to all templates

Junior React Developer Assessment Test

This Junior React Developer test evaluates candidates' proficiency in React Native and React, focusing on their ability to build dynamic and responsive user interfaces. It is designed to assess the foundational skills necessary for a Frontend Developer role.

Proficiency Level
Beginner-Expert
Experience
0-8 years
Duration
30 mins
WeCP Verified
WeCP
Subject Matter Expert
Use This Template

Use Case

  • Assesses debugging skills and JSX syntax understanding in React.
  • Tests knowledge of data manipulation and event handling in React.
  • Evaluates familiarity with React Native's platform and styling features.
  • Identifies proficiency in React lifecycle methods and REST API usage.

Skills Covered

React
L3
Medium
Verified
IT-Programming Languages/Frameworks
Handling events
MCQs(Single Correct)
+27 more
< /svg>

About

Junior React Developer Assessment Test

This Junior React Developer test is designed to assess the foundational skills of candidates with 0-3 years of experience in React Native and React. It evaluates their ability to build dynamic and responsive user interfaces, ensuring they possess the essential knowledge required for a Frontend Developer role. The test covers key concepts and practical applications, providing a comprehensive evaluation of the candidate's proficiency in React technologies. It is an ideal tool for employers seeking to identify talented individuals who can contribute effectively to their development teams.

Target Audience

This assessment is suitable for hiring managers, recruiters, and team leads looking to evaluate candidates for Frontend Developer roles, particularly those focusing on React Native and React technologies.

Prerequisites
  • Basic understanding of JavaScript and ES6 syntax
  • Familiarity with React and React Native frameworks
  • Knowledge of component-based architecture
  • Experience with state management libraries like Redux
  • Understanding of RESTful APIs and asynchronous programming
  • Ability to work with version control systems like Git
  • Basic knowledge of HTML and CSS for styling components
Test Overview
Duration
30 mins
Questions
25
Passing Score
70%

Questions

Building websites using React Native
L2
L2
React Native
React Navigation
What this question evaluates
This question evaluates the candidate's understanding of navigation in React Native applications. It tests their knowledge of managing the navigation history stack and implementing a back button feature.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Using ImageViews in JavaScript
L2
L2
Property setters
React Native
What this question evaluates
This question evaluates the candidate's familiarity with React Native and the usage of annotations in JavaScript. It requires understanding of how to expose view property setters in React Native using annotations like @ReactProp, @ReactPropGroup, and @ReactComponent.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Invoking UNSAFE_componentWillMount()
L2
L2
React
React methods and rendering
What this question evaluates
This question evaluates the candidate's understanding of React lifecycle methods and state management. It specifically tests their knowledge of how the UNSAFE_componentWillMount() method and synchronous setState() calls can affect the rendering and updating of a component.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Touchable highlights in React Native
L1
L1
React Native
touchables
What this question evaluates
This question evaluates the candidate's understanding of touchable highlights and touchable native feedback in a user interface. It tests the candidate's ability to identify the correct statement about the behavior of touchable highlights and touchable native feedback.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Using axios to make requests
HTTP Requests
HTTP Requests
L2
React
What this question evaluates
This question evaluates the candidate's understanding of making GET requests in a React application using the axios library. It assesses their knowledge of the appropriate syntax and usage of axios.get() method, as well as their familiarity with handling responses and errors. The candidate must be able to identify the correct code snippet that makes a GET request for a remote image.
Type:
Programming
Difficulty:
Hard
Time:
1.25 mins
Attempts:
100+
Success Rate:
70.01%
Remove operation
L2
L2
React
Redux
What this question evaluates
This question evaluates the candidate's understanding of the Redux concept of reducers and their role in removing items from an array. It requires familiarity with JavaScript array manipulation methods like slice, splice, and filter. The candidate must identify the code snippet that does not correctly remove an item from the array.
Type:
Programming
Difficulty:
Easy
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
Load the data from server
Components
Components
L1
React Native
What this question evaluates
This question tests the candidate's understanding of React Native and its component lifecycle methods. The candidate should be familiar with the different lifecycle methods in React Native and know which one is used to load data from a server as soon as the component is mounted. They should also be aware of how to send GET requests, handle JSON data, and log output to the console.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Selecting multiple options in a select tag
Debugging
Debugging
Form Handling
HTML
Select Tag
Syntax Knowledge
What this question evaluates
This question evaluates the candidate's understanding of syntax in working with form controls, specifically the select tags in a web development context.
Type:
Programming
Difficulty:
Medium
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
Detect which platform the React Native application is running
L2
L2
React Native
select
What this question evaluates
This question evaluates the candidate's familiarity with React Native and platform detection. It requires understanding of JavaScript, React Native's Platform module, and conditional statements. The candidate must identify alternative methods to detect the platform on which a React Native application is running.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Styling a component
Flex dimensions
Flex dimensions
L2
React Native
What this question evaluates
This question evaluates the candidate's understanding of flexbox and CSS styling. It tests their knowledge of how to create a responsive layout using flexbox and how the flex dimension affects the size of components. The candidate must recognize the importance of the flex dimension in distributing space among components and determining how they expand and shrink.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Working with lists
L2
L2
List Keys and Forms
React
What this question evaluates
This question evaluates the candidate's understanding of JavaScript array methods, specifically the 'map' method. It requires the ability to correctly use arrow functions to perform a specific operation on each element of an array.
Type:
Programming
Difficulty:
Easy
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
Working with systrace methods
L2
L2
React Native
systrace methods
What this question evaluates
This question evaluates the candidate's familiarity with systrace methods for registering a value to the profileName in a systrace timeline. It requires understanding of the different systrace methods and their purposes, particularly in relation to profileName registration.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Using the createElement() method
Elements
Elements
L2
React
What this question evaluates
This question evaluates the candidate's understanding of React and the createElement() method. It tests their knowledge of using createElement() in React without JSX, specifically identifying the valid type of arguments that can be specified. The candidate needs to be familiar with the different types of arguments that can be passed to the createElement() method.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Using contexts to pass provider value
Contexts
Contexts
L2
React
What this question evaluates
This question evaluates the candidate's understanding of React context and how to use it. It requires knowledge of React's Context API and the ability to identify valid values that can be used as the Provider value in a given context.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Ensure that structures are appropriately handled
Components
Components
L2
React
What this question evaluates
This question evaluates the candidate's understanding of handling complex data structures in React components. It tests the knowledge of using pure components instead of regular components to extend a class and the appropriate techniques to ensure data integrity during significant changes. The candidate must identify the correct approach that handles complex data structures efficiently.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
User-Defined Components
JSX
JSX
L2
React
What this question evaluates
This question evaluates the candidate's understanding of JSX syntax in React and their ability to identify code lines that will not work as expected. It tests the candidate's knowledge of how JSX handles importing components and rendering user-defined components.
Type:
Programming
Difficulty:
Easy
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
Avoiding props drilling
L1
L1
Props Drilling
React
What this question evaluates
This question evaluates the candidate's understanding of various methods to avoid props drilling in a React application. It tests knowledge of React Context API, Render Props, and Compositions. The candidate must identify the correct method(s) to avoid props drilling based on the given options.
Type:
Programming
Difficulty:
Easy
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
Displaying as a bullet list
L2
L2
React
React Basics
What this question evaluates
This question evaluates the candidate's familiarity with rendering lists in React using JSX syntax. It requires understanding of React components, JSX syntax, and how to map through an array to generate a list. The candidate must recognize the correct syntax for rendering a list as a bullet list in React v17.0.1.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Server side rendering
L2
L2
Libraries
React
What this question evaluates
This question evaluates the candidate's familiarity with server side rendering in a Redux application. It requires understanding of the ReactDOMServer module and its methods for rendering initial HTML before sending it to the client side.
Type:
Programming
Difficulty:
Easy
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
React Loading Indicator
Component Rendering
Component Rendering
React Fragment
React Hold
React Lazy
React Suspense
What this question evaluates
This question assesses the candidate's knowledge about handling component rendering in React, specifically the use of certain React features to manage loading indicators.
Type:
Programming
Difficulty:
Medium
Time:
1.25 mins
Attempts:
100+
Success Rate:
70.01%
Rendering components in React
Components
Components
L2
React
What this question evaluates
This question evaluates the candidate's understanding of component rendering in React. It requires knowledge of React's component lifecycle and the ability to hide a component during rendering.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Refactor the code
L2
L2
List Keys and Forms
React
What this question evaluates
This question tests the candidate's understanding of React components and basic JSX rendering. It evaluates the candidate's knowledge of mapping over an array and rendering dynamic content. The candidate needs to identify the correct attribute to assign to the inputItems in order to achieve the desired functionality.
Type:
Programming
Difficulty:
Easy
Time:
0.75 mins
Attempts:
100+
Success Rate:
70.01%
Obtain similar behaviour
Events
Events
IT-Programming Languages/Frameworks
L2
MCQs(Single Correct)
Medium
What this question evaluates
This question evaluates the candidate's understanding of React and its event handling. It focuses on the concept of event handling in React and requires the ability to identify the appropriate method(s) to achieve a similar behavior in React as the given plain HTML code.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Nested data
IT-Programming Languages/Frameworks
IT-Programming Languages/Frameworks
L2
MCQs(Single Correct)
Medium
React
What this question evaluates
This question evaluates the candidate's knowledge of manipulating nested data structures in Redux. It tests understanding of how to update nested fields in the Redux state using the spread operator and object destructuring. The candidate must recognize the correct approach to copy all levels of nested data without mutating the original state.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Point out the errors in the code
Handling events
Handling events
IT-Programming Languages/Frameworks
L3
MCQs(Single Correct)
Medium
What this question evaluates
This question assesses the candidate's skills in debugging JavaScript code, understanding function definitions, and identifying errors in code implementation.
Type:
Programming
Difficulty:
Medium
Time:
1 mins
Attempts:
100+
Success Rate:
70.01%
Trusted by over 2000 companies of all sizes

Customization Options

Fully Customizable Tests

Tailor every aspect of your assessment to match your specific requirements. From question types to scoring algorithms, create the perfect evaluation environment.
Learn More
Question Types

Choose from multiple formats including MCQs, coding challenges, and system design questions.

Scoring Rules

Define custom scoring algorithms and weightage for different question types.

Time Settings

Set overall duration and individual question time limits.

Custom Branding

Add your company logo, colors, and custom welcome messages.

Candidate Experience

Interactive coding environment with real-time feedback
Clear instructions and test cases for each question
Built-in code editor with syntax highlighting
Immediate evaluation of submissions
Progress tracking throughout the assessment
Detailed explanations for correct answers
Time management tools to help pace yourself

Proctoring & Anti-Cheating

Sherlock AI Agent

Sherlock is more than just a tool, it's your AI test integrity agent. By continuously monitoring and analyzing candidate behavior in real-time, Sherlock ensures a secure and fair testing environment. Using machine learning, it detects suspicious patterns, so you can focus on reliable results while Sherlock handles test integrity.

Live Monitoring

Track behavior with real-time video and audio.

Screen Tracking

Multi-screen detection and continuous screen recording during assessment.

Pattern Analysis

Spot suspicious actions with AI-driven insights.

Access Control

Ensure secure tests with browser lockdown.
Real-time Monitoring
Video Feed
Active
Screen Activity
98%
Focus Rate
95%
Hiroshi Tanaka
Candidate
Passed
85%
AI Summary
Skills Performance
Score
React
87%
L3
80%
Medium
85%
Verified
82%
Areas of Improvement
Review
Verified
Practice
L3
Skill Assessment
Detailed evaluation of technical skills and problem-solving abilities.
AI Analysis
Machine learning-powered insights into candidate performance patterns.
Benchmarking
Compare results against industry standards and other candidates.
Action Items
Specific recommendations for skill development and improvement.

Pricing Plans

Freemium
US$ 0
5 credits / mo
check icon
Smooth Candidate Experience
check icon
Skill fit candidates
check icon
Conduct face to face interviews
check icon
ATS Integrations
check icon
Standard compliance, security and audits
check icon
Standard support from WeCP Team
Enterprise
Talk to us for a comprehensive solution that meets all your enterprise needs.
Freemium
US$ 0
60 credits / yr
check icon
Use Prebuilt Questions
check icon
Standard Cheat Prevention
check icon
Smooth Candidate Experience
check icon
Skill fit candidates
check icon
Conduct face to face interviews
check icon
ATS Integrations
check icon
Standard compliance, security and audits
check icon
Standard support from WeCP Team
Enterprise
Talk to us for a comprehensive solution that meets all your enterprise needs.
Are you an Enterprise?
Talk to us for a comprehensive solution that meets all your enterprise needs.
Talk To Sales
Talk to us for a comprehensive solution that meets all your enterprise needs
check icon
Effortless Data Migration: Our support team ensures a smooth transition, keeping your assessments and data intact.
check icon
AI-Assisted Onboarding: WeCP AI Copilot, guides your team through features, making onboarding quick and simple.
check icon
Easy Change Management: Comprehensive training and 24/7 support ensure a seamless switch with minimal operational impact.
Top Recognised Skill Assessment and Interviewing Software
Trusted by 850+ companies in 20+ countries
New: Add-on
Advanced AI
US$ 50per agent/month
Enterprise-grade AI instantly understands common customer issues for your industry, routes tickets and gives agents extra insights. In any plan, Advanced AI is available at the Professional and higher levels.
check icon
Ticketing system
check icon
Ticketing system
check icon
Ticketing system
check icon
Ticketing system
New: Add-on
Advanced AI
US$ 50per agent/month
Enterprise-grade AI instantly understands common customer issues for your industry, routes tickets and gives agents extra insights. In any plan, Advanced AI is available at the Professional and higher levels.
check icon
Ticketing system
check icon
Ticketing system
check icon
Ticketing system
check icon
Ticketing system

What Our Customers Say

"We have evaluated more than hundreds of thousands of techies using WeCP until now. The tool has been very effective in assessing strengths and weaknesses of candidates."
Allahbaksh Asadullah
Principal Product Architect, Infosys
"With WeCP's automation capabilities, we've not only streamlined the process but also enhanced the candidate experience."
Paula Macnab
Hiring Manager, Yellow
"Comprehensive reports and analytics help us make data-driven hiring decisions. The platform has streamlined our entire process."
Erich Raldmann
Managing Partner, Spherion

Frequently Asked Questions

How does AI proctoring work?
Our AI proctoring system, Sherlock, uses advanced machine learning algorithms to monitor candidate behavior in real-time. It analyzes video, audio, and screen activity to detect potential cheating attempts while maintaining candidate privacy.
Can I customise assessment templates?
Yes! All plans include access to our template library, and you can customize them to match your specific requirements. Professional and Enterprise plans offer additional customization options and the ability to create custom templates from scratch.
What type of reports are available?
We provide comprehensive reports including detailed skill assessments, AI-powered behavioral analysis, comparative analytics, and improvement recommendations. Reports can be customized and exported in various formats.
Is the platform suitable for remote hiring?
Absolutely! Our platform is specifically designed for remote hiring with features like secure browser lockdown, AI proctoring, and real-time monitoring. It ensures the same level of assessment integrity as in-person evaluations.
How do you ensure security of assessment data?
We implement enterprise-grade security measures including end-to-end encryption, secure data storage, and regular security audits. We comply with GDPR and other major data protection regulations.