String.prototype.repeat()
The repeat() method constructs and returns a new string
which contains the specified number of copies of the string on which it was called,
concatenated together.
Try it
Syntax
js
repeat(count)
Parameters
count-
An integer between
0and+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
countis negative or ifcountoverflows maximum string length.
Examples
Using repeat()
js
"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
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