String.prototype.trim() - JavaScript | MDN
Try it
const greeting = " Hello world! ";
console.log(greeting);
// Expected output: " Hello world! ";
console.log(greeting.trim());
// Expected output: "Hello world!";
Syntax
Parameters
None.
Return value
A new string representing str stripped of whitespace from both its beginning and end. Whitespace is defined as white space characters plus line terminators.
If neither the beginning or end of str has any whitespace, a new string is still returned (essentially a copy of str).
Examples
Using trim()
The following example trims whitespace from both ends of str.
js
const str = " foo ";
console.log(str.trim()); // 'foo'
Specifications
| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-string.prototype.trim |