3603 interview questions for developers (2024)

Medium

59 votes2680 runs4 comments

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

Web developer

Vincent Cotroat Jan 18, 2024

Medium

28 votes2466 runs3 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

28 votes2120 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

27 votes1219 runs1 comment

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

Back-end developer

recursion

Vincent Cotroat Mar 28, 2023

Easy

24 votes5084 runs0 comment

Write the non-JSX equivalent of the following code:

Web developer

react

jsx

Victor Sabatierat Jan 4, 2022

Easy

24 votes2997 runs2 comments

Create a form with two mandatory fields in Angular

Web developer

angular

form

validation

Anonymous authorat Jan 4, 2022

Easy

21 votes1367 runs1 comment

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

Back-end developer

functions

errors

Vincent Cotroat Mar 24, 2023

Easy

19 votes5089 runs1 comment

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

Web developer

props

list

Victor Sabatierat Jan 4, 2022

Easy

19 votes2181 runs

6 comments

Write a Java program that prints 'welovedev'.

Full stack developer

strings

variables

Pierreat Sep 19, 2022

Easy

18 votes2626 runs1 comment

Fix the following Javascript loop:

Web developer

loops

conditions

Camilleat Apr 27, 2023

Medium

15 votes2328 runs0 comment

Explain the prototype scope in Spring

Back-end developer

spring

bean

Anonymous authorat Dec 21, 2021

Easy

15 votes1814 runs0 comment

List the different build modes in Flutter

Mobile developer

build

modes

Clément Devos (W3D Team)at Jan 4, 2022

Expert

15 votes1577 runs0 comment

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

Back-end developer

list

for loop

Théoat Mar 28, 2022

Easy

14 votes2042 runs1 comment

Update a column in an SQL table

Back-end developer

sql

update

Vincent Cotroat Nov 7, 2023

Easy

14 votes1312 runs1 comment

What is TypeScript?

Web developer

typescript

javascript

angular

Léoat Mar 29, 2022

Medium

13 votes5163 runs0 comment

Write a React component as a function

Web developer

react

functions

state

Clément Devosat Jan 4, 2022

Medium

13 votes2925 runs2 comments

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

Web developer

angular

providers

Anonymous authorat Mar 28, 2023

Hard

13 votes2858 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

Easy

13 votes2094 runs0 comment

Select only distinct values in a column using SQL

Back-end developer

sql

distinct

Vincent Cotroat Mar 27, 2023

Easy

13 votes1478 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

3603 interview questionsfor developers (2024)

Test your developer skills before an interview with 3603 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 a SQL query to retrieve the list of employees with a salary greater than 5100.

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

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

Write a Java program that prints 'welovedev'.

Fix the following Javascript loop:

Explain the prototype scope in Spring

List the different build modes in Flutter

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

Update a column in an SQL table

What is TypeScript?

Write a React component as a function

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

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; } ```

Select only distinct values in a column using SQL

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);