Not really hex.

console.hex.js

console.hex = function (data) {
  var columns = 40,
      line = '',
      code;

  function pad(number, length) {
    var str = '' + number;
    while (str.length < length) {
        str = '0' + str;
    }
    return str;
  }

  for (var i = 0; i < data.length; i++) {
    if ((i % columns) == 0) {
      console.log(line);
      line = '';
    }

    line += pad(data.charCodeAt(i), 3) + ' ';
  }

  console.log(line);
};