How to add spaces between every character in a string?

Question

I am trying to create a function that inserts spaces between the characters of a string argument then return a new string which contains the same characters as the argument,

Answer 1

Alternative for a split and join solution could be:

'Hello'.replace(/(.(?!$))/g,'$1 '); //=> H e l l o
 //               ^all characters but the last
 //                          ^replace with found character + space

Or in a function:

function insertChr(str,chr) {
  chr = chr || ' '; //=> default is space
  return str.replace(/(.(?!$))/g,'$1'+chr);
}
//usage
insertChr('Hello');     //=> H e l l o
insertChr('Hello','-'); //=> H-e-l-l-o

or as a String prototype function:

String prototype.insertChr(chr){
  chr = chr || ' '; //=> default is space
  return this.replace(/(.(?!$))/g,'$1'+chr);
}
//usage
'Hello'.insertChr();    //=> H e l l o
'Hello'.insertChr('='); //=> H=e=l=l=o