JavaScript interview questions

Want to become an expert in cracking JavaScript interview questions/Front end interview questions?

Start with practicing the questions below. Whether a question involves multiple choice or live coding, we will give you hints as you go and tell you if your answers are correct or incorrect.

After that, take our timed public JavaScript interview questions test.

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1. Ensure
JavaScript Language Public

Implement the ensure functi...
Easy  
3min
Solve question

2. RemoveProperty
JavaScript Language Public

Implement the removePropert...
Easy  
7min
Solve question

3. Date
JavaScript Strings Public

Write a function that conve...
Easy  
10min
Solve question

4. ImageGallery
JavaScript DOM manipulation Public

An image gallery is a set o...
Easy  
10min
Solve question

5. Closures
JavaScript Bug fixing Closures Public

Fix the bugs in the registe...
Hard  
15min
Solve question

6. Loop
JavaScript Bug fixing DOM manipulation Public

Function appendChildren sho...
Hard  
15min
Solve question

If you feel ready, take one of our timed public JavaScript interview questions tests:

  • ASP.NET MVC, HTML/CSS, JavaScript, C#, and SQL online test ( Easy  /  Hard )
  • ASP.NET Web Forms, HTML/CSS, JS, C#, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, and Bootstrap online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, C#, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, Java, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, PHP, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, Python, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, Ruby, and SQL online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, SQL, and C# Algorithms online test ( Easy  /  Hard )
  • HTML/CSS, JavaScript, SQL, and Java Algorithms online test ( Easy  /  Hard )
  • JavaScript online test ( Easy  /  Hard )
  • JavaScript and SQL online test ( Easy  /  Hard )
  • TypeScript and JavaScript online test ( Easy )
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