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What is the rest parameter in JavaScript?

The rest parameter collects multiple function arguments into a single array. It is represented by three dots (...) before the parameter name.

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What are JavaScript Closures and how are they useful in practice?

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Explain event delegation in JavaScript and why we should use it.

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1 . What is the difference between let, const, and var?

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.