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.

Therepeat() method ofString values constructs and returns a new stringwhich contains the specified number of copies of this string, concatenated together.

Try it

const mood = "Happy! ";console.log(`I feel ${mood.repeat(3)}`);// Expected output: "I feel Happy! Happy! Happy! "

Syntax

repeat(count)

Parameters

count: An integer between0 andInfinity, 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 ifcount is negative or ifcount 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)