Regular expression for removing whitespaces

Question

I have some text which looks like this -

\"    tushar is a good      boy     \"

Using javascript I want to remove all the extra white spac

Answer 1

Try this:

str.replace(/\s+/g, ' ').trim()

If you don't have trim add this.

Trim string in JavaScript?

Answer 2

Since everyone is complaining about .trim(), you can use the following:

str.replace(/\s+/g,' ' ).replace(/^\s/,'').replace(/\s$/,'');

JSFiddle

Answer 3

Try:

str.replace(/^\s+|\s+$/, '')
   .replace(/\s+/, ' ');

Answer 4

This can be done in a single String#replace call:

var repl = str.replace(/^\s+|\s+$|\s+(?=\s)/g, "");

// gives: "tushar is a good boy"

Answer 5

try

var str = "    tushar is a good      boy     ";
str = str.replace(/^\s+|\s+$/g,'').replace(/(\s\s\s*)/g, ' ');

first replace is delete leading and trailing spaces of a string.

Answer 6

This works nicely:

function normalizeWS(s) {
    s = s.match(/\S+/g);
    return s ? s.join(' ') : '';
}

• trims leading whitespace
• trims trailing whitespace
• normalizes tabs, newlines, and multiple spaces to a single regular space