The endsWith()
method determines whether a string ends with the characters of a specified string, returning true
or false
as appropriate.
String.prototype.endsWith()
Try it
Syntax
endsWith(searchString) 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 tostr.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
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
endsWith |
41
|
12
|
17
|
No
|
28
|
9
|
≤37
|
36
|
17
|
24
|
9
|
3.0
|
1.0
|
4.0.0
0.12.0
|
See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith