Array.prototype.join() - JavaScript | MDN

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Array.prototype.toString()

The string conversions of all array elements are joined into one string. If an element is undefined or null, it is converted to an empty string instead of the string "null" or "undefined".

Indexed collections

TypedArray.prototype.join()

String.prototype.split()

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This page was last modified on Jul 28, 2026 by MDN contributors.

[Symbol.iterator]()

[Symbol.unscopables]

[Symbol.hasInstance]()

__defineGetter__()

__defineSetter__()

__lookupGetter__()

__lookupSetter__()

propertyIsEnumerable()

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