Will give various representations of a single character

viewCharacter.js

function characterWays(a) {
  var decimal = a.charCodeAt(0);
  var octal = decimal.toString(8);
  var hex = decimal.toString(16);
  var oct = "\\" + octal;
  var hexValue = "0x" + hex;
  var uniValue = "U+" + hex;
  var escUni = "" + hex;
  var escURL = "%" + hex;
  var escHex = "\\x" + hex;
  while (escUni.length < 4) escUni = "0" + escUni;
  var escUniValue = "\\u" + escUni;
  var htmlValue = "&#" + decimal + ";";
  return htmlValue + " " + oct + " " + escURL + " " + escHex + " " + hexValue + " " + uniValue + " " + escUni + " " + escUniValue;
}
alert(characterWays("D"));