JAVA SCRIPT - Convert From String to Unicode

function toUnicode(theString) {

  var unicodeString = '';

  for (var i=0; i < theString.length; i++) {

    var theUnicode = theString.charCodeAt(i).toString(16).toUpperCase();

    while (theUnicode.length < 4) {

      theUnicode = '0' + theUnicode;

    }

    theUnicode = '\\u' + theUnicode;

    unicodeString += theUnicode;

  }

  return unicodeString;

}