A sample anagram program...

anagram_a.js

function anagram(text) {
   var a = text.split("");
   for (var i = 0; i < a.length; i += 1) {
       var letter = a[i];
       var j = Math.floor(Math.random() * a.length);
       a[i] = a[j];
       a[j] = letter;
   }
   return a.join("");
}