toUnicode.js

String.prototype.toUnicode = function (){
  function pad(t) {
    return t.length == 4 ? t : pad("0" + t);
  }
  var r=""; 
  for (var i = 0; i < this.length; i++) {
    r += "\\u" + pad(this.charCodeAt(i).toString(16));
  } 
  return r; 
}