How to remove double white space character using regexp?

Question

Input:

\".    .   .  . .\"

Expected output:

\". . . . .\"

Answer 1

var str="this is    some text    with   lots  of    spaces!";
var result =str.replace(/\s+/," ");

Answer 2

try

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

Answer 3

text = text.replace(/\s{2,}/g, ' ');

• \s will take all spaces, including new lines, so you may change that to / {2,}/g.
• {2,} takes two or more. Unlike \s+, this will not replace a single space with a single space. (a bit of an optimization, but it usually makes a differance)
• Finally, the g flag is needed in JavaScript, or it will only change the first block of spaces, and not all of them.

Answer 4

in PCRE:

s/\s+/ /g

in JavaScript:

text = text.replace(/\s+/g, " ");