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What is the difference between function scope and block scope?

Entry JavaScript

Answer

Function scope: Variables declared with var are accessible throughout the function.

Block scope: Variables declared with let or const are limited to the enclosing braces {}.

Block scope reduces bugs and prevents variable leakage.

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SugharaIQ Editorial Team Verified Answer

This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.

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