Javascript Engineer Interview Questions

1,561 javascript engineer interview questions shared by candidates

What is a closure? How do you detect if an element is in the viewport? What would the server look at to detect bots vs humans? What is the difference between cookies and localStorage? How do you handle team disagreements?
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Javascript Engineer

Interviewed at Constructor

4.6
May 28, 2025

What is a closure? How do you detect if an element is in the viewport? What would the server look at to detect bots vs humans? What is the difference between cookies and localStorage? How do you handle team disagreements?

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