Bling.js

// bling.js
var $ = window.$ = document.querySelector.bind(document);
var $$ = window.$$ = document.querySelectorAll.bind(document);
Node.prototype.on = window.on = function(name, fn) {
  this.addEventListener(name, fn);
}
NodeList.prototype.__proto__ = Array.prototype;
NodeList.prototype.on = NodeList.prototype.addEventListener = (function(name, fn) {
  this.forEach(function(elem) {
    elem.on(name, fn);
  });
});