Answer
Hoisting moves variable and function declarations to the top of their scope before execution. Only declarations are hoisted, not initializations.
Quick Answer
Hoisting moves declarations to the top of their scope during compile time — before code runs. var declarations and function declarations are hoisted. var is initialized as undefined; function declarations are fully hoisted (callable before they appear). let and const are hoisted but not initialized — accessing them before declaration throws a ReferenceError (temporal dead zone).
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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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Source: SugharaIQ