Answer
Functions in JavaScript are treated as values, enabling assignment, passing as arguments, and returning from functions.
Quick Answer
First-class functions means functions are values in JavaScript — they can be stored in variables, passed as arguments, returned from other functions, and put in arrays or objects. This enables higher-order functions, callbacks, and functional programming patterns. It's what makes setTimeout(fn, 1000) work — fn is just a value.
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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