Test Javascript - Fundamentals

Test Javascript with answers to assess your knowledge and prepare for job interviews. Assess your technical level in 20 minutes.

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Test details

Beginner
February 2024
21 minutes
🇫🇷
🇺🇸
4.3/5(83)

The proposed test allows you to test your skills and knowledge in the Javascript scripting programming language. It is made up of questions intended for people who have already had experience using this language, but not necessarily very advanced. It is also an opportunity to test your general knowledge in an area that is at the heart of all web development today. Here are the concepts covered:

  • Array methods
  • Variables (types, scope, declaration, mutability)
  • object-oriented programming
  • loops
  • The operators
  • Functions
  • Instance methods
  • Dot notation
  • Unit and functional tests
  • The evolutions of javascript and its link with ecmascript
This test consists of 20 questions randomly selected from a database of 53 questions in Javascript.Discover all our interview questions and answers here
1.
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Axel
3069 points
2.
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Nicolas
2998 points
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Badii
2995 points
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Gérald
2987 points
5.
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Anthony
2981 points

Test author : Kahina

ETIC INSA technologies is the “junior enterprise” of INSA Lyon. It carries out expertise for companies ranging from multinational groups to very small ones in almost all domains of engineering.

Contributors25
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Sample question

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

const numbers = [1, 2, 3, 4, 5];

const doubledNumbers1 = numbers.forEach((num) => {
  return num * 2;
});

const doubledNumbers2 = numbers.map((num) => {
  return num * 2;
});
See 53 test questions.Participate in test improvement

Developers ratings

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01/03/2024🇺🇸
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Giuliano
28/02/2024🇫🇷
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Antoine
28/02/2024🇫🇷
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Maissane
21/02/2024🇫🇷
Il y a une grande diversité dans les question et c'est très interactif et dynamique pour l'utilisateur.
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Maxime
19/02/2024🇫🇷