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Showing content from https://developer.cdn.mozilla.net/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat below:

String.prototype.repeat() - JavaScript | MDN

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

const mood = "Happy! ";

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

count

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

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

RangeError

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

"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)

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