页面加载时加Loading效果

html

---

<div id="loading"><img src="img/load1.gif" id="loading" /></div>

css

---

#loading {
position: fixed;
top: 0;
left: 0;
100%;
height: 100%;
z-index: 2000;
opacity: 1;
}

#loading img {
100%;
position: absolute;
z-index: 2001;
}

js

---

//监听加载状态改变
document.onreadystatechange = completeLoading;
//加载状态为complete时移除loading效果
function completeLoading() {
if (document.readyState == "complete") {
$("#loading").animate({
"opacity": "0"
}, 500).hide(1000);
}
}