JavaScript (ES2026) reference · String Methods

JavaScript String trim() Method

Remove whitespace (spaces, tabs, line breaks) from both ends of a string.

JavaScript (ES2026) Since ES5

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Syntax

string.trim()

A new string.

Trim both endsTry it yourself

console.log(JSON.stringify("  hello \n".trim()));

Output

"hello"

Clean user inputTry it yourself

const input = "  [email protected] ";
console.log(input.trim().toLowerCase());

Output

[email protected]

Version	Change
JavaScript ES5	Added

string.trimStart() · Remove whitespace (spaces, tabs, line breaks) from the start of a string only, leaving the end untouched.
string.trimEnd() · Remove whitespace (spaces, tabs, line breaks) from the end of a string only, leaving the start untouched.
JavaScript Strings · tutorial
JavaScript String Methods · tutorial