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1142 interview questionsfor Web developer (2026)

Test your technical skills before an interview of Web developer with 1142 corrected questions. Beginner, Intermediate or Expert level.

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1142 questions
Medium
118 votes4634 runs
6 comments

Understanding the differences between `map()` and `forEach()` methods in JavaScript

Web developer
Vincent Cotroat Jan 18, 2024
Easy
50 votes4250 runs4 comments

Write a JavaScript function that fetches data from an API and logs it to the console.

Web developer
promises
async
Vincent Cotroat Mar 28, 2023
Easy
39 votes2334 runs1 comment

Explain the difference between the `include` and `require` functions in PHP.

Back-end developer
functions
errors
Vincent Cotroat Mar 24, 2023
Easy
36 votes6401 runs
1 comment

Write the non-JSX equivalent of the following code:

Web developer
react
jsx
Victor Sabatierat Jan 4, 2022
Easy
32 votes6364 runs1 comment

Write the missing code to render the children of the UserProfile component.

Web developer
props
list
Victor Sabatierat Jan 4, 2022
Easy
32 votes4337 runs
2 comments

Fix the following Javascript loop:

Web developer
loops
conditions
Anonymous authorat Apr 27, 2023
Easy
32 votes3890 runs2 comments

Create a form with two mandatory fields in Angular

Web developer
angular
form
validation
Anonymous authorat Jan 4, 2022
Easy
26 votes952 runs1 comment

What is the purpose of the Laravel Sanctum tool?

Web developer
laravel
authentication
Damienat Sep 6, 2023
Easy
23 votes2090 runs1 comment

What is TypeScript?

Web developer
typescript
javascript
angular
Anonymous authorat Mar 29, 2022
Easy
21 votes1245 runs1 comment

Load blog post data at build time for a static render.

Web developer
nextjs
static site generation
Anas ISMAILIat Nov 30, 2023
Easy
18 votes5118 runs
2 comments

Call a function on the first render of a React component

Web developer
react
hooks
Clément Devosat Jan 4, 2022
Easy
17 votes3859 runs
3 comments

Which provider is recommended for DOM manipulation in Angular?

Web developer
angular
dom
Anonymous authorat Jan 4, 2022
Easy
17 votes3820 runs
3 comments

Which of these methods, allowing to create Providers, does not exist in Angular?

Web developer
angular
providers
Anonymous authorat Mar 28, 2023
Easy
15 votes6462 runs
2 comments

Save the state used to display the selected page in a React component.

Web developer
state
react
Clément Devosat Nov 7, 2023
Medium
15 votes2981 runs0 comment

Which of the following statements are true ?

Back-end developer
functions
variables
Anonymous authorat Mar 28, 2022
Easy
15 votes1336 runs0 comment

What is the path to the about page in Next.js?

Web developer
nextjs
routes
Anas ISMAILIat Nov 30, 2023
Hard
15 votes735 runs
1 comment

How to create a two column layout with Bootstrap?

Web developer
Maxime Javauxat Apr 19, 2024
Easy
14 votes4736 runs
5 comments

The certificate variable is not attainable outside the if loop

Web developer
variables
scope
Anonymous authorat Apr 6, 2022
Easy
13 votes4529 runs
3 comments

Use spread operator to split an array into two arrays in Javascript

Web developer
array
spread operator
Anonymous authorat Jul 19, 2024
Easy
13 votes4457 runs
1 comment

Write a Javascript code that displays 'Adversity is not to be feared' and 'There is potentially a real danger'

Web developer
booleans
conditionals
Adrienat Mar 30, 2022
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