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About the test

The React online test assesses candidates' knowledge of programming using the React/ReactJS library and their ability to leverage commonly used programming patterns.

It's an ideal test for pre-employment screening. A good React developer needs to be able to solve problems using the React library and also know how to solve problems in the React way.

This test asks candidates to solve coding problems in React and find and fix bugs in React programs.

Sample public questions

Easy
7 min
code
Public
React
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.

The component should use React Hooks.

Easy
10 min
code
Public
React
Conditional Rendering
Event Handling
Managing State

The Message component contains an anchor element and a paragraph below the anchor. Rendering of the paragraph should be toggled by clicking on the anchor element using the following logic:

  • At the start, the paragraph should not be rendered.
  • After a click, the paragraph should be rendered.
  • After another click, the paragraph should not be rendered.

Finish the Message component by implementing this logic.

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23 more premium React questions

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

Skills and topics tested

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

For job roles

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

Sample candidate report

What others say

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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 High Performer 2022G2 Read Our Reviews

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