Handle all DOM events

gistfile1.js

// chrome
Object.keys(document)
  .filter(function (i) {
    return i.substring(0,2) == 'on' && (document[i] == null || typeof document[i] == 'function');
  })
  .map(function (e) { 
    return e.slice(2); 
  })
  .forEach(function (eventName) {
    document.addEventListener(eventName, function (event) {
      console.log('[' + eventName + ']', event);
    });
  });
  
// firefox
[i for (i in document)]
  .filter(function (i) {
    return i.substring(0,2) == 'on' && (document[i] == null || typeof document[i] == 'function');
  })
  .map(function (e) { 
    return e.slice(2); 
  })
  .forEach(function (eventName) {
    document.addEventListener(eventName, function (event) {
      console.log('[' + eventName + ']', event);
    });
  });