The endsWith() method determines whether a string ends with the characters of a specified string, returning true or false as appropriate.


str.endsWith(searchString[, length])


The characters to be searched for at the end of str.
length Optional
If provided, it is used as the length of str. Defaults to str.length.

Return value

true if the given characters are found at the end of the string; otherwise, false.


This method lets you determine whether or not a string ends with another string. This method is case-sensitive.


This method has been added to the ECMAScript 6 specification and may not be available in all JavaScript implementations yet. However, you can polyfill String.prototype.endsWith() with the following snippet:

if (!String.prototype.endsWith) {
	String.prototype.endsWith = function(search, this_len) {
		if (this_len === undefined || this_len > this.length) {
			this_len = this.length;
		return this.substring(this_len - search.length, this_len) === search;


Using endsWith()

let str = 'To be, or not to be, that is the question.'

console.log(str.endsWith('question.'))  // true
console.log(str.endsWith('to be'))      // false
console.log(str.endsWith('to be', 19))  // true


ECMAScript (ECMA-262)
The definition of 'String.prototype.endsWith' in that specification.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
endsWithChrome Full support 41Edge Full support 12Firefox Full support 17IE No support NoOpera Full support 28Safari Full support 9WebView Android Full support ≤37Chrome Android Full support 36Firefox Android Full support 17Opera Android Full support 24Safari iOS Full support 9Samsung Internet Android Full support 3.0nodejs Full support 4.0.0
Full support 4.0.0
Full support 0.12
Disabled From version 0.12: this feature is behind the --harmony runtime flag.


Full support  
Full support
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User must explicitly enable this feature.
User must explicitly enable this feature.

See also