Hex to ascii with javascript

ascii.js

function hexToAscii(hexx) {
  var hex = hexx.toString(); //force conversion
  var str = "";
  for (var i = 0; i < hex.length && hex.substr(i, 2) !== "00"; i += 2)
    str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
    console.log(str);
}