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                <pre><code><span class="debug">{"a":"foo","b":"bar"}</span>
<span class="info">Many messages, such logging, wow!</span>
<span class="warn">Warning, warning!</span>
<span class="error">Oh noes, y u do dis?</span>


                body {
  background: black;
  color: white;

pre code {
  font: 11pt/1.25 Monaco, monospace;

.debug { color: Snow; }
.info  { color: LawnGreen; }
.warn  { color: GoldenRod; }
.error { color: LightCoral; }


 * This pen allows you to use all your favourite console functions right in
 * CodePen: `console.log`, ``, `console.warn`, `console.error`,
 * and `console.clear` are supported.
 * To scroll the console to the bottom as messages are printed use the
 * `console.follow` function.
 * Made with love by @nullobject (, 2014.

var console = (function() {
  var following = false,
      pre       = document.createElement('pre'),
      code      = document.createElement('code');

  return {
    clear:  clear,
    follow: follow,
    log:    print.bind(this, 'debug'),
    info:   print.bind(this, 'info'),
    warn:   print.bind(this, 'warn'),
    error:  print.bind(this, 'error')
  function clear() {
    while (code.hasChildNodes()) {
  function follow() {
    following = true;
  function print(className, object) {
    var s    = (typeof object === 'string') ? object : JSON.stringify(object),
        span = document.createElement('span'),
        text = document.createTextNode(s + '\n');

    span.setAttribute('class', className);
    if (following) {
  function scrollToBottom() {
    window.scrollTo(0, document.body.scrollHeight);