Lazy? the JS "Library"

lazy.js

/* Lazy?, the JS "Library" is (c) Jeremy Wilhelm, licensed MIT */

window.doc = document
window.head = document.head
window.body = document.body
window.$   = document.querySelector.bind(document)
window.$$  = document.querySelectorAll.bind(document)

Element.prototype.byId    = Element.prototype.getElementById
Element.prototype.byClass = Element.prototype.getElementsByClassName
Element.prototype.byTag   = Element.prototype.getElementsByTagName

Element.prototype.getAttr = Element.prototype.getAttribute
Element.prototype.setAttr = Element.prototype.setAttribute
Element.prototype.delAttr = Element.prototype.removeAttribute

Element.prototype.getData = function(attr) { return this.getAttribute('data-' + attr) }
Element.prototype.setData = function(attr, value) { this.setAttribute('data-' + attr, value) }
Element.prototype.delData = function(attr) { this.removeAttribute('data-' + attr) }