Link checker

gistfile1.js

var links = document.getElementsByTagName('a');
console.log(links.length);

var workingUrls = [],
    brokenUrls = [];

function l(e){
  var t = e.target;
  var url = t.src;
  console.log(url, e.type);

  // cleaning the DOM.
  t.parentNode.removeChild(t);

  switch(e.type){
    case 'load':
      workingUrls.push(url);
      break;
    case 'error':
      brokenUrls.push(url);
      break;
    default:
      throw "Oopsy, wrong error type: "+e.type;
  }

}

Array.prototype.forEach.call(links, function(e,i){
  if(i >= 5)
    return;
  
  var url = e.href;
  var iframe = document.createElement('iframe');
  iframe.src = url;
  //iframe.style = 'display:none';

  document.body.appendChild(iframe);

  iframe.addEventListener('load', l, false);
  iframe.addEventListener('error', l, false);
});

setTimeout(function(){
  console.log(workingUrls);
  console.log(brokenUrls);
}, 5000);