Javascript and backslashes replace

Question

here is my string:

var str = \"This is my \\string\";

This is my code:

var replaced = str.replace(\"/\\\\/\", \"\\\\\\\\\")         


        

Answer 1

Use this

str.replace(/(\s)/g,function($0){return $0==' '?' ':'\\s'})

or

str.replace(/ /g,'something').replace(/\s/g,'\\s').replace(/something/g,' ');

'something' it may be a combination of characters that is not in string

var str=' \s';  
  str.replace(/\s/g,'\\s'); 
// return '\\s\\s'   
  str.replace(/ /g,'SpAcE').replace(/\s/g,'\\s').replace(/SpAcE/g,' ');
// return ' \\s'