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React Online Test

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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.

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Free Sample Questions for React Test

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Toggle Message

10min
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Easy  
  -  
CODE

React Conditional rendering Event handling Managing state Public New

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.

Focus

15min
  -  
Easy  
  -  
CODE

React Components Public

The TextInput component renders an input element in the DOM and accepts a ref that is forwarded to that input element. Finish the FocusableInput component:

  • The component should accept a focused prop.
  • When the focused prop is changed from false to true, and the input is not focused, it should receive the focus.
  • If on mounting the focused prop is true, the input should receive the focus.

Todo List

15min
  -  
Easy  
  -  
CODE

React Event handling Public New

Write a TodoList component that expects an items prop, and a list of objects, each with text and done properties.

TodoList also accepts an onItemClick function prop, which should be called when a user clicks an item in the list, if the item is not marked as done. Otherwise, the onItemClick should not be called and the click event itself should not be propagated further. The function should be called with the item object from the items list as the first parameter and the event as the second parameter.

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Premium Questions for React Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Question Names

These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.

Details, Contact Form, Shopping List, Theme Context Switcher, List Wrapper, Player Status, Tab Strip, Tooltip Component, Email Form, Background Wrapper, Simple Calculator, Toggle Options Visibility, Cards Widget, Error Catcher, Post Comment, Product Rating, Reorder
Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

React Components Conditional rendering Managing state Context React Hooks Higher order components Effect Hook State Hook Portals VDOM Reducer Hook Data binding Error boundaries Content manipulation Event handling
Recommended Job Roles

These are the job roles that we recommend for the React online test.

JavaScript Developer
React Developer
Web Front-End Developer

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