How can I insert a character after every n characters in javascript?

Question

I have a string: "The quick brown fox jumps over the lazy dogs."

I want to use JavaScript (possibly with jQuery) to insert a character every n characters. For example I want to call:

var s = "The quick brown fox jumps over the lazy dogs."; var new_s = UpdateString("$",5); // new_s should equal "The q$uick $brown$ fox $jumps$ over$ the $lazy $dogs.$" 

The goal is to use this function to insert &shy into long strings to allow them to wrap.

Maybe someone knows of a better way?

Answer 1

With regex

"The quick brown fox jumps over the lazy dogs.".replace(/(.{5})/g,"$1$")  The q$uick $brown$ fox $jumps$ over$ the $lazy $dogs.$ 

cheers,

Answer 2

function chunk(str, n) {     var ret = [];     var i;     var len;      for(i = 0, len = str.length; i < len; i += n) {        ret.push(str.substr(i, n))     }      return ret };  chunk("The quick brown fox jumps over the lazy dogs.", 5).join('$'); // "The q$uick $brown$ fox $jumps$ over$ the $lazy $dogs."