This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.
The endsWith() method of String values determines whether a string ends with the characters of this string, returning true or false as appropriate.
const str1 = "Cats are the best!";
console.log(str1.endsWith("best!"));
// Expected output: true
console.log(str1.endsWith("best", 17));
// Expected output: true
const str2 = "Is this a question?";
console.log(str2.endsWith("question"));
// Expected output: false
endsWith(searchString) endsWith(searchString, endPosition)
searchStringThe characters to be searched for at the end of str. Cannot be a regex. All values that are not regexes are coerced to strings, so omitting it or passing undefined causes endsWith() to search for the string "undefined", which is rarely what you want.
endPosition OptionalThe end position at which searchString is expected to be found (the index of searchString's last character plus 1). Defaults to str.length.
true if the given characters are found at the end of the string, including when searchString is an empty string; otherwise, false.
TypeErrorThrown if searchString is a regex.
This method lets you determine whether or not a string ends with another string. This method is case-sensitive.
const 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
| Desktop | Mobile | Server | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | Bun | Deno | Node.js | |
endsWith |
41 | 12 | 17 | 28 | 9 | 36 | 17 | 24 | 9 | 3.0 | 37 | 9 | 1.0.0 | 1.0 | 4.0.0 |
© 2005–2025 MDN contributors.
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