React Online Test

TestDome skill assessments are used by more than 11,000 companies and 1,030,000 test takers.

For Jobseekers

Practice your skills and earn a certificate of achievement when you score in the top 25%.

Take a Practice Test

For Companies

Test candidates with real-world problems and interview the best ones.

Sign Up to Offer this Test

About the test

The React online test assesses knowledge of building web user interfaces with the React/ReactJS library through a series of live coding questions.

The assessment includes work-sample tasks such as:

  • Creating reusable Components.
  • Working with Hooks to access state and other React features.
  • Handling user events and updating the application based on user actions.

A good React/ReactJS developer should be able to work with the library effectively to create maintainable and accessible web user interfaces.

Sample public questions

7 min
Effect Hook
React Hooks
Reference Hook

Finish the FocusableInput component so that the input element automatically receives focus on the first render if the shouldFocus prop is true.

20 min
Data Binding
React Hooks
State Hook

An RPG game lets you assign points to various attributes of your character to improve it. The points earned by the character are available to assign across all attributes. Each attribute can only be assigned at most 70% of totalPoints (rounded down to the nearest integer) unless totalPoints is 1, in which case only one attribute can get a maximum of 1 point. The sum of all points assigned plus the points remaining should add up to totalPoints.

Implement the CharacterAttributes component with the logic described above and the following requirements:

  • Points should be assigned by moving the slider and the remaining points should be displayed in the span tag.
  • When initialized, all points are available and all sliders start at 0.
  • Each slider must have a range from 0 up to totalPoints.

For example, if totalPoints is 15 then the user shouldn't be able to drag the slider past 10 even if more points are available.

For jobseekers: get certified

Earn a free certificate by achieving top 25% on the React test with public questions.

Take a Certification Test

Sample silver certificate

Sunshine Caprio

Java and SQL
TestDome logo icon

For companies: premium questions

Buy TestDome to access premium questions that can't be practiced.
Get money back if you find any premium question answered online.

Sign Up to Offer this Test

25 more premium React questions

Error Catcher, Tooltip Component, Reorder, List Wrapper, Email Form, Toggle Options Visibility, Subscription, Player Status, Simple Calculator, Shopping List, Product Rating, Tab Strip, Details, Email Input, Contact Form, Post Comment, Login Form, Product Search, Pet Form, Async Paragraph, Click Button, Cards Widget, Habit Chart, Theme Context Switcher, Factory Status.

Skills and topics tested

  • React
  • Components
  • Error Boundaries
  • Portals
  • Event Handling
  • React Hooks
  • Higher Order Components
  • Data Binding
  • Conditional Rendering
  • State Hook
  • Effect Hook
  • Reducer Hook
  • Managing State
  • RAID
  • Content Manipulation
  • Hooks
  • Forms
  • Asynchronous Calls
  • Context

For job roles

  • JavaScript Developer
  • React Developer
  • Web Front-End Developer

Sample candidate report

What others say

Decorative quote

Simple, straight-forward technical testing

TestDome is simple, provides a reasonable (though not extensive) battery of tests to choose from, and doesn't take the candidate an inordinate amount of time. It also simulates working pressure with the time limits.

Jan Opperman, Grindrod Bank

Product reviews

G2 - Crowd Badge
G2 - High Performer (2022)
Capterra - 4.5 Stars
Capterra - Shortlist (2023)

Used by

Solve all your skill testing needs

150+ Pre-made tests

From web development and database administration to project management and customer support. See all pre-made tests.

90+ skills

From JavaScript and SQL to English and customer support. See all questions to filter by skill.

Multi-skills Test

Mix questions for different skills or even custom questions in one test. See an example.

How TestDome works


Choose a pre-made test
or create a custom test


Invite candidates via
email, URL, or your ATS


Candidates take
a test remotely


Sort candidates and
get individual reports

Want to know more?

Related React Tests: