加载中.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>document.onreadystatechange  文档加载状态</title>
    <style>
        body{
            margin: 0;
            padding: 0;
            font-family: "Microsoft YaHei", Helvetica, Arial, sans-serif;
        }
        body,html{
            width: 100%;
            height: 100%;
        }
        #loading{
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            text-align: center;
            font-size: 32px;
            line-height: 1.5;
            position: fixed;
            color: #FFF;
        }
    </style>
</head>
<body>
<div id="loading">载入中</div>
<img src="../css3/sdy.jpg" alt="">
</body>
<script src="jquery-1.11.3.js"></script>
<script>
    $(function(){
        var loading = $("#loading");
        document.onreadystatechange=function(){
            if(document.readyState=="complete"){
                loading.remove();
            }
        }
    })
</script>
</html>