var focusImgTime = null;var dom = document.getElementById("waitPreorder");var opacity = document.getElementById("opacity");var focusImg = document.getElementById("focusImg");var currentImg = 1;var isFocusImg = true;var startFocusImgTime = null;var startBooking = function() {	var mobliePreorder = document.getElementById("mobliePreorder");	mobliePreorder.onclick = function() {		var r = Math.ceil(Math.random() * 10);		r > 5 ? getJsonpRequest() : getFocusImg()//这里就是关键的地方了 ，随机一个数字决定你是否直接跳到预定还是弹“火爆“窗体	}};var getJsonpRequest = function() {	var url = "http://count.booking.meizu.com/count.php?jsonpcallback=getActivityData";	var script = document.createElement(‘script‘);	script.setAttribute(‘src‘, url);	document.getElementsByTagName(‘head‘)[0].appendChild(script)//脚本请求返回结果调用下面getActivityData的方法};
//处理结果返回预定的跳转地址var getActivityData = http://www.mamicode.com/function(data) {>//弹窗var getFocusImg = function() {	isFocusImg = false;	var clientHeight = document.documentElement.clientHeight;	var bodyHeight = document.body.clientHeight;	dom.style.display = "block";	opacity.style.width = document.documentElement.clientWidth;	opacity.style.height = bodyHeight + "px";	focusImg.style.top = (clientHeight - 612) / 2 + "px";	focusImg.style.left = (document.documentElement.clientWidth - 992) / 2 + "px";	startFocusImgTime = setInterval(function() {		getJsonpRequest()	}, 5000)//倒数5秒后请求跳转};startBooking();