how to remove double white space using regexp (javascript)

Question

how to remove double white space using regexp (javascript) ?

var text = "My         name      is          Anas                 Fares";

result

var result = "My name is Anas Fares";

Maybe it needs regexp :)

How can i learn regexp because it is very hard. Are there any simple book ?

Answer 1

You don't need a book, just a decent cheat sheet.

Answer 2

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 3

in PCRE:

s/\s+/ /g

in JavaScript:

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

Answer 4

try

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

Answer 5

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