JavaScript

Array Methods

Definition

Built-in methods on the Array prototype for transforming and querying arrays. Key methods include `map` (transform each element), `filter` (select elements), `reduce` (accumulate), `find` (first match), `some`/`every` (boolean tests), and `sort`.

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Related Terms

Spread Operator

The ... syntax that expands an iterable (array, string, object) into individual elements. Used for copying arrays/objects, merging, and passing multiple arguments to functions.

Higher-Order Function

A function that either takes one or more functions as arguments, returns a function, or both. Common examples include map, filter, reduce, and forEach.