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225 interview questionsfor Web designer (2026)

Test your technical skills before an interview of Web designer with 225 corrected questions. Beginner, Intermediate or Expert level.

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225 questions
Medium
119 votes4683 runs
6 comments

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

Web developer
Anonymous authorat Jan 18, 2024
Medium
50 votes4294 runs4 comments

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

Web developer
promises
async
Anonymous authorat Mar 28, 2023
Easy
36 votes6442 runs
1 comment

Write the non-JSX equivalent of the following code:

Web developer
react
jsx
Victor Sabatierat Jan 4, 2022
Easy
32 votes6402 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 votes4381 runs
2 comments

Fix the following Javascript loop:

Web developer
loops
conditions
Anonymous authorat Apr 27, 2023
Easy
18 votes5156 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 votes4776 runs
5 comments

The certificate variable is not attainable outside the if loop

Web developer
variables
scope
Anonymous authorat Apr 6, 2022
Easy
15 votes6503 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
Easy
15 votes1359 runs0 comment

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

Web developer
nextjs
routes
Anas ISMAILIat Nov 30, 2023
Easy
14 votes1529 runs0 comment

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

Web developer
typescript
types
Anonymous authorat Mar 29, 2023
Medium
13 votes4672 runs
7 comments

Print the number of countries in the array travel.

Web developer
array
for loop
Anonymous authorat Sep 5, 2022
Easy
13 votes4568 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 votes4495 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
13 votes1517 runs0 comment

Define a custom type that represents a coordinate with an x and y property of type number in Typescript

Web developer
typescript
type
Anonymous authorat Mar 31, 2023
Easy
12 votes5014 runs1 comment

Use useCallback to optimize rendering in React

Web developer
react
usecallback
Clément Devosat Mar 15, 2024
Easy
12 votes4803 runs0 comment

What can be said about ECMAScript?

Web developer
standards
javascript
Anonymous authorat Apr 12, 2022
Easy
11 votes5154 runs1 comment

Find the issue with this React code:

Web developer
react
useCallback
Clément Devosat Jan 4, 2022
Easy
11 votes4543 runs2 comments

Write a for in loop in Javascript

Web developer
arrays
loops
Anonymous authorat Apr 6, 2022
Easy
11 votes4031 runs0 comment

Write a React component that displays the sum of two numbers

Web developer
react
components
state
Vincent Cotroat Jan 4, 2022
Easy
11 votes3502 runs
1 comment

Find the index of the last element of an array in JavaScript

Web developer
arrays
index
Axelat Sep 4, 2023
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