JavaScript test for interview: free practice with answers
What a JavaScript screening round looks like, five sample questions in the same style, and the full free test with every answer explained.
What the real round usually looks like
Most JavaScript interview tests are ten to twenty multiple-choice questions, sometimes followed by a short practical task. The pass mark on this site is 80%, and JavaScript is commonly screened for front-end, full-stack and Node.js developer roles. Requirements vary by employer, so treat the benchmark as a floor.
Try the sample
JavaScript: 5 interview-style questions
5 questions · instant feedbackHow to prepare in three days
- Take the full test once to find the gap.
- Read the lesson that matches the gap and retake the next day.
- Read the JavaScript interview questions aloud so you can explain your score.
Common questions
Should I learn var if modern code uses let and const?
Yes, enough to read it. Older code and many test questions still use var, and its function scope and hoisting explain several classic output puzzles.
Do I need a framework for these questions?
No. This test covers core JavaScript that every framework is built on, and strong fundamentals make learning any framework much faster.
Can I practise without installing anything?
Yes. Every modern browser has a developer console where you can paste a snippet and see the output immediately. Node.js is useful later for running scripts outside the browser.
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