String.prototype.trimEnd()
BaselineWidely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
ThetrimEnd() method ofString values removes whitespace from the end of this string and returns a new string, without modifying the original string.trimRight() is an alias of this method.
Try it
const greeting = " Hello world! ";console.log(greeting);// Expected output: " Hello world! ";console.log(greeting.trimEnd());// Expected output: " Hello world!";Syntax
trimEnd()trimRight()Parameters
None.
Return value
A new string representingstr stripped of whitespace from its end (right side). Whitespace is defined aswhite space characters plusline terminators.
If the end ofstr has no whitespace, a new string is still returned (essentially a copy ofstr).
Aliasing
Aftertrim() was standardized, engines also implemented the non-standard methodtrimRight. However, for consistency withpadEnd(), when the method got standardized, its name was chosen astrimEnd. For web compatibility reasons,trimRight remains as an alias totrimEnd, and they refer to the exact same function object. In some engines this means:
String.prototype.trimRight.name === "trimEnd";Examples
Using trimEnd()
The following example trims whitespace from the end ofstr, but not from its start.
let str = " foo ";console.log(str.length); // 8str = str.trimEnd();console.log(str.length); // 6console.log(str); // ' foo'Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-string.prototype.trimend |