String.prototype.repeat()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

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

Try it

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