How to remove duplicate white spaces in a string? [duplicate]

Question

Possible Duplicate:
Removing whitespace from string in JavaScript

I have used trim function to remove the white spaces at the beginning and end of the sentences. If there is to much white spaces in between words in a sentence, is there any method to trim?

for example

"abc                  def. fds                            sdff." 

Answer 1

try

"abc                  def. fds                            sdff."  .replace(/\s+/g,' ') 

or

"abc                  def. fds                            sdff."      .split(/\s+/)      .join(' '); 

or use this allTrim String extension

String.prototype.allTrim = String.prototype.allTrim ||      function(){         return this.replace(/\s+/g,' ')                    .replace(/^\s+|\s+$/,'');      }; //usage: alert(' too much whitespace     here   right?  '.allTrim());    //=> "too much whitespace here right?"