The endsWith()
method determines whether a string ends with the characters of a specified string, returning true
or false
as appropriate.
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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 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.
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; }; }
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
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'String.prototype.endsWith' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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
|
Legend
- Full support
- Full support
- No support
- No support
- User must explicitly enable this feature.
- User must explicitly enable this feature.