JavaScript is a type of scripting language used to create and control dynamic website content. It means anything that moves, refreshes, or changes on your screen without requiring you to manually reload a web page. Mostly, this language can be written right in a web page’s HTML and run automatically as the page loads. JavaScript is also called as a lightweight language. JavaScript programming allow client-side script to interact with user and create dynamic pages.

iMocha's JavaScript online test is used by top tech companies to get several benefits including but not limited to:

Assess & hire job-fit candidate faster

Reduce hiring time up to 40%

Reduce 85% of candidate filtration time

Assess & map skills level of your existing employees

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Use iMocha’s JavaScript assessment test based on MCQ questions to evaluate theoretical knowledge of the developer.

Use our JavaScript coding test to evaluate practical knowledge of developer by giving them coding challenges based on difficulty level as Low/Medium/High.

Use our live coding interview platform ,if you want to assess programming knowledge of the developer in real-time coding environment while interacting with the candidate.

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A JavaScript developer needs to develop front end logic and connect it with back-end services. You need to consider below key skills while hiring a great JavaScript developer-

Technical Skills:

1. Knowledge of Asynchronous Programming and Functional Programming
2. Experience in writing cross-browser code
3. Knowledge and experience in React and Redux
4. HTML / CSS Frameworks
5. Experience in jQuery, Node and Express
6. Knowledge of version control concepts

Soft Skills:

• Leadership
• Conflict Resolution
• Flexibility
• Open-mindedness
• Problem-solving skills
• Critical Thinking

Check out these must-have and nice-to-have JavaScript skills highlighted in this blog.

Here are few important questions that you can ask to JavaScript developer to predict technical proficiency and behavioral traits:

1. What are the different types of errors in JavaScript?
2. How are object properties assigned?
3. What are the important properties of an anonymous function in JavaScript?
4. Explain the differences between one-way data flow and two-way data binding.
5. How do you check if an object is an array or not?
6. Explain the difference between classical inheritance and prototypal inheritance.
7. Tell me about your last project - what worked and what didn’t?
8. What is the hardest technical problem you have run into?
9. Have you ever faced conflicts with your team members? How did you resolve it?
10. What was the toughest project you worked on?

Explore our carefully chosen JavaScript interview questions to evaluate candidates' technical skills and find the right fit for your team.