?var?$?=?function?(selector)?{ ????????????return?new?$.prototype.init(selector); ????????}; ????????$.prototype?=?{ ????????????init:?function?(selector)?{ ????????????????this.el?=?document.querySelector(selector); ????????????????console.log(this) ????????????????return?this; ????????????}, ????????????on:?function?(event,?fn)?{ ????????????????if?(window.addEventListener)?{ ????????????????????this.el.addEventListener(event,?fn,?false); ????????????????}?else?if?(window.attachEvent)?{ ????????????????????this.el.attachEvent(on?+?event,?fn); ????????????????} ????????????????return?this; ????????????}, ????????????attr:?function?(event,?val)?{ ????????????????if?(!val)?{ ????????????????????return?this.el.getAttribute(event); ????????????????}?else?{ ????????????????????this.el.setAttribute(event,?val); ????????????????????return?this; ????????????????} ????????????} ????????} ????????$.prototype.init.prototype?=?$.prototype;