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

Answer 1

var str = 'asdads   adasd    adsd';
str = str.replace(/\s+/g, ' ');

Answer 2

I think what you're looking for is JavaScript's string.replace() method.

If you want all whitespace removed, use this:

"abc def. fds sdff.".replace(/\s/g, '');
Returns: "abcdef.fdssdff."

If you want only double-spaces removed, use:

"abc   def.  fds      sdff.".replace(/\s\s/g, ' ');
Returns: "abc def. fds sdff."

If you want the space left after a period, use:

"abc def. fds   sdff.".replace(/[^.]\s/g, '')
Returns: "abcdef. fdssdff."

Answer 3

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?"

Answer 4

value.replace("  ", " ");

This should do the trick, it just replaces 2 white spaces to one, until you get only 1 white space.

Answer 5

You can trim multiple consecutive spaces down to only one space with this Javascript:

var str = "abc def.  fds    sdff.";
str = str.replace(/\s+/g, " ");

If you meant something other than multiple consecutive spaces, then please clarify in your question what you meant.

Answer 6

Refer to the following code part which used rejex in javascript to remove duplicate white spaces.

function trim(value) {
   var temp = value;
   var obj = /^(\s*)([\W\w]*)(\b\s*$)/;
   if (obj.test(temp)) { temp = temp.replace(obj, '$2'); }
   var obj = / +/g;
   temp = temp.replace(obj, " ");
   if (temp == " ") { temp = ""; }
   return temp;
}