Web/JavaScript/Reference/Global objects/String/endsWith

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

Syntax

str.endsWith(searchString[, length])

Parameters

searchString: 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.

Description

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

Examples

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

Polyfill

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;
  };
}

Specifications

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

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
`endsWith`	Chrome Full support 41	Edge Full support 12	Firefox Full support 17	IE No support No	Opera Full support 28	Safari Full support 9	WebView Android Full support ≤37	Chrome Android Full support 36	Firefox Android Full support 17	Opera Android Full support 24	Safari iOS Full support 9	Samsung Internet Android Full support 3.0	nodejs Full support 4.0.0 Full support 4.0.0 Full support 0.12 Disabled' Disabled' From version 0.12: this feature is behind the `--harmony` runtime flag.

Legend

Full support: Full support
No support: No support
User must explicitly enable this feature.': User must explicitly enable this feature.