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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 this string.
length
Optional. If provided overwrites the considered length of the string to search in. If omitted, the default value is the length of the string.

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()

var 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(searchStr, Position) {
      // This works much better than >= because
      // it compensates for NaN:
      if (!(Position < this.length))
        Position = this.length;
      else
        Position |= 0; // round position
      return this.substr(Position - searchStr.length,
                         searchStr.length) === searchStr;
  };

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'String.prototype.endsWith' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'String.prototype.endsWith' in that specification.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic Support41(Yes)17No289
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support(Yes)36(Yes)17No(Yes)9

See also