Improve your JavaScript skills with this online quiz featuring 10 multiple-choice questions. Whether you’re a beginner or an experienced developer, this quiz covers JavaScript fundamentals, functions, objects, DOM manipulation, ES6 features, and asynchronous programming.

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10 Minutes JavaScript Quiz Test Online

Test your JavaScript knowledge with this 10-minutes quiz! Covering fundamental to advanced concepts, this quiz features 10 multiple-choice questions that will challenge your understanding of variables, functions, objects, asynchronous programming, and DOM manipulation. Perfect for interview preparation and skill enhancement.

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1. Which function repeatedly executes code after a set interval?

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2. Which method is used to trigger a custom event?

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3. How can you detect if cookies are enabled in the browser?

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4. What is the purpose of the focus event in JavaScript?

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5. How do you toggle a class on an element?

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6. What does the performance.now() method return?

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7. What is the purpose of the AbortController API in JavaScript?

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8. How do you prevent the default form submission in AJAX?

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9. What is the use of arrow functions in ES6?

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10. What is the prototype in JavaScript?

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