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1138 interview questionsfor Web developer (2025)

Test your technical skills before an interview of Web developer with 1138 corrected questions. Beginner, Intermediate or Expert level.

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1138 questions
Medium
97 votes3787 runs5 comments

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

Web developer
Vincent Cotroat Jan 18, 2024
Medium
42 votes3472 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
31 votes5853 runs
1 comment

Write the non-JSX equivalent of the following code:

Web developer
react
jsx
Victor Sabatierat Jan 4, 2022
Easy
31 votes1911 runs1 comment

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

Back-end developer
functions
errors
Vincent Cotroat Mar 24, 2023
Easy
29 votes3542 runs2 comments

Create a form with two mandatory fields in Angular

Web developer
angular
form
validation
Anonymous authorat Jan 4, 2022
Easy
25 votes5838 runs1 comment

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

Web developer
props
list
Victor Sabatierat Jan 4, 2022
Easy
24 votes3591 runs
2 comments

Fix the following Javascript loop:

Web developer
loops
conditions
Camilleat Apr 27, 2023
Easy
21 votes1778 runs1 comment

What is TypeScript?

Web developer
typescript
javascript
angular
Léoat Mar 29, 2022
Easy
21 votes674 runs1 comment

What is the purpose of the Laravel Sanctum tool?

Web developer
laravel
authentication
Damienat Sep 6, 2023
Medium
16 votes5986 runs
2 comments

Write a React component as a function

Web developer
react
functions
state
Clément Devosat Jan 4, 2022
Easy
16 votes4600 runs
2 comments

Call a function on the first render of a React component

Web developer
react
hooks
Clément Devosat Jan 4, 2022
Easy
16 votes3505 runs
3 comments

Which provider is recommended for DOM manipulation in Angular?

Web developer
angular
dom
Anonymous authorat Jan 4, 2022
Medium
15 votes3469 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
14 votes5919 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
Hard
13 votes510 runs0 comment

How to create a two column layout with Bootstrap?

Web developer
Maxime Javauxat Apr 19, 2024
Easy
12 votes1233 runs0 comment

Which of the following utility types makes all properties of a given type optional?

Web developer
typescript
types
Vincent Cotroat Mar 29, 2023
Easy
11 votes4057 runs
5 comments

The certificate variable is not attainable outside the if loop

Web developer
variables
scope
Kahinaat Apr 6, 2022
Easy
11 votes3869 runs
3 comments

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

Web developer
array
spread operator
Kahinaat Jul 19, 2024
Easy
11 votes3814 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
Easy
11 votes1654 runs
3 comments

Specify the location in the DOM where the component of the active route will be inserted in Angular

Web developer
angular
router
Léoat Mar 29, 2022
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