String.prototype.repeat()

The repeat() method of String values constructs and returns a new string which contains the specified number of copies of this string, concatenated together.

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Syntax

repeat(count)

Parameters

count: An integer between 0 and +Infinity, indicating the number of times to repeat the string.

Return value

A new string containing the specified number of copies of the given string.

Exceptions

RangeError: Thrown if count is negative or if count overflows maximum string length.

Examples

Using repeat()

"abc".repeat(-1); // RangeError
"abc".repeat(0); // ''
"abc".repeat(1); // 'abc'
"abc".repeat(2); // 'abcabc'
"abc".repeat(3.5); // 'abcabcabc' (count will be converted to integer)
"abc".repeat(1 / 0); // RangeError

({ toString: () => "abc", repeat: String.prototype.repeat }).repeat(2);
// 'abcabc' (repeat() is a generic method)

Specifications

Specification
ECMAScript Language Specification # sec-string.prototype.repeat

Browser compatibility

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	Deno	Node.js
`repeat`	41	12	24	28	9	36	24	28	9	3.0	41	1.0	4.0.0

Docs

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