模拟domReady

myReady.js

/**
 * Created by ling on 2015/11/3.
 */

var myReady = function(fn){
	if(document.addEventListener){
		document.addEventListener('DOMContentLoaded', fn, false);
	}else{
		IEContentLoaded(fn);
	}

	function IEContentLoaded(fn){
		var dom = window.document;
		var done = false;

		var init = function(){
			if(!done){
				fn();
				done = true;
			}
		};

		(function(){
			try{
				dom.documentElement.doScroll('left');
			}catch(e){
				setTimeout(arguments.callee, 50);
			}
			init();
		})();

		dom.onreadystatechange = function(){
			if(dom.readyState == 'complete'){
				init();
				dom.onreadystatechange = null;
			}
		}
	}
};