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What is the difference between function declarations and function expressions?

Function declarations are hoisted completely and can be called before they are defined, while function expressions are assigned to variables and cannot be invoked before assignment.

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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.