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Showing content from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/trim below:

String.prototype.trim() - JavaScript | MDN

In this article

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.

const str = "   foo  ";
console.log(str.trim()); // 'foo'

Specifications Browser compatibility

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