3481 interview questions for developers (2024)

Medium

32 votes1813 runs3 comments

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

Web developer

Vincent Cotroat Jan 18, 2024

Medium

19 votes1662 runs2 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

17 votes4477 runs0 comment

Write the non-JSX equivalent of the following code:

Web developer

react

jsx

Victor Sabatierat Jan 4, 2022

Easy

16 votes2549 runs2 comments

Create a form with two mandatory fields in Angular

Web developer

angular

form

validation

Anonymous authorat Jan 4, 2022

Easy

16 votes933 runs0 comment

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

Back-end developer

functions

errors

Vincent Cotroat Mar 24, 2023

Easy

15 votes1690 runs3 comments

Write a Java program that prints 'welovedev'.

Full stack developer

strings

variables

Pierreat Sep 19, 2022

Easy

15 votes1401 runs0 comment

Write a SQL query to retrieve the list of employees with a salary greater than 5100.

Back-end developer

sql

select

where

Vincent Cotroat Mar 30, 2023

Easy

14 votes4477 runs1 comment

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

Web developer

props

list

Victor Sabatierat Jan 4, 2022

Easy

13 votes1389 runs0 comment

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

IT Architect

OOP

javascript

undefined

Eric Hostaleryat Dec 3, 2021

Easy

13 votes759 runs0 comment

Write a Python function that returns the factorial of a number.

Back-end developer

recursion

Vincent Cotroat Mar 28, 2023

Easy

12 votes1563 runs0 comment

List the different build modes in Flutter

Mobile developer

build

modes

Clément Devos (W3D Team)at Jan 4, 2022

Medium

11 votes4496 runs0 comment

Write a React component as a function

Web developer

react

functions

state

Clément Devosat Jan 4, 2022

Medium

11 votes2510 runs1 comment

Which provider is recommended for DOM manipulation in Angular?

Web developer

angular

dom

Anonymous authorat Jan 4, 2022

Easy

11 votes1852 runs1 comment

Fix the following Javascript loop:

Web developer

loops

conditions

Camilleat Apr 27, 2023

Easy

10 votes3272 runs1 comment

What is the minimum PHP version for Symfony 5?

Back-end developer

php

symfony

Smaïne Millaniat Dec 3, 2021

Hard

10 votes2477 runs1 comment

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

Web developer

angular

providers

Anonymous authorat Mar 28, 2023

Hard

10 votes1115 runs0 comment

Write a Python function that prints the elements of a list.

Back-end developer

list

for loop

Théoat Mar 28, 2022

Easy

9 votes3300 runs1 comment

Call a function on the first render of a React component

Web developer

react

hooks

Clément Devosat Jan 4, 2022

Hard

8 votes2590 runs0 comment

A Customer class has the com.company.model package.

Back-end developer

inheritance

package

Thomas De verdièreat Jan 4, 2022

Hard

8 votes2553 runs0 comment

How many times is the condition `(a++ < 15)` evaluated in the following code? ```java int a = 3; while (a++ < 15) { if ((a++ % 5) == 0) break; } ```

Back-end developer

loops

control flow

Thomas De verdièreat Dec 16, 2021

3481 interview questionsfor developers (2024)

Test your developer skills before an interview with 3481 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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

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

Write the non-JSX equivalent of the following code:

Create a form with two mandatory fields in Angular

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

Write a Java program that prints 'welovedev'.

Write a SQL query to retrieve the list of employees with a salary greater than 5100.

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

Is the following code valid? class Person { constructor(name, age) { this.name = name; this.age = age; } } const person = new Person('John', 20); console.log(person.name); console.log(person.age);

Write a Python function that returns the factorial of a number.

List the different build modes in Flutter

Write a React component as a function

Which provider is recommended for DOM manipulation in Angular?

Fix the following Javascript loop:

What is the minimum PHP version for Symfony 5?

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

Write a Python function that prints the elements of a list.

Call a function on the first render of a React component

A Customer class has the com.company.model package.

How many times is the condition `(a++ < 15)` evaluated in the following code? ```java int a = 3; while (a++ < 15) { if ((a++ % 5) == 0) break; } ```