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What are arrow functions and how do they differ from regular functions?

Entry JavaScript
Quick Answer Arrow functions: shorter syntax, no own this (inherit from enclosing scope), no arguments object, can't be used as constructors. Regular functions: have their own this (determined by call context), have arguments object, can be constructors. Use arrow functions for callbacks and methods that don't need their own this; regular functions for methods that do.

Answer

Arrow functions have shorter syntax, do not have their own this, and cannot be used as constructors.

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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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