String.prototype.trim()
Returns a new string with whitespace removed from both ends.
Syntax
str.trim()Returns
string — A new string with leading and trailing whitespace removed.
Examples
console.log(' hello '.trim());
Output
hello
console.log('\t\n x \n'.trim());
Output
x
Notes
Removes all whitespace characters including spaces, tabs, newlines, and
no-break spaces. Does not affect internal whitespace. Does not mutate the
original string.
Browser & runtime support
| Environment | Since version |
|---|---|
| chrome | 4 |
| firefox | 3.5 |
| safari | 5 |
| edge | 12 |
| node | 0.10 |