Jquery页面加载效果

时间 2019-11-30 标签 jquery 页面加载效果
一、说明javascript
　　Jquery页面加载可实现异步请求时提示“请稍后，正在加载...”效果。css
二、代码html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>jquery页面加载特效</title>
    <style type="text/css">
        *
        {
            margin: 0;
            padding: 0;
            list-style-type: none;
        }
        a, img
        {
            border: 0;
        }
        .loading
        {
            margin: 100px auto 0 auto;
            width: 400px;
            text-align: center;
            font-size: 18px;
        }
        .loading .action
        {
            text-decoration: none;
            font-family: "微软雅黑" , "宋体";
        }
        
        .cover
        {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            z-index: 998;
            width: 100%;
            height: 100%;
            _padding: 0 20px 0 0;
            background: #f6f4f5;
            display: none;
        }
        .showLoad
        {
            position: fixed;
            top: 0;
            left: 50%;
            z-index: 9999;
            opacity: 0;
            filter: alpha(opacity=0);
            margin-left: -80px;
        }
        *html, *html body
        {
            background-image: url(about:blank);
            background-attachment: fixed;
        }
        *html .showLoad, *html .cover
        {
            position: absolute;
            top: expression(eval(document.documentElement.scrollTop));
        }
        #ajaxLoad
        {
            border: 1px solid #8CBEDA;
            font-size: 12px;
            font-weight: bold;
        }
        #ajaxLoad div.loadAll
        {
            width: 180px;
            height: 50px;
            line-height: 50px;
            border: 2px solid #D6E7F2;
            background: #fff;
        }
        #ajaxLoad img
        {
            margin: 10px 15px;
            float: left;
            display: inline;
        }
    </style>
    <script type="text/javascript" src="js/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            var hei = $(document).height();
            $(".cover").css({ "height": hei });
            $(".action").click(function () {
                startWaiting();
                setTimeout(function () {
                    endWaiting();
                }, 3000);
            });
        });

        //开始加载
        function startWaiting() {
            $(".cover").css({ 'display': 'block', 'opacity': '0.8' });
            $(".showLoad").stop(true).animate({ 'margin-top': '300px', 'opacity': '1' }, 200);
        }

        //结束加载
        function endWaiting() {
            $(".showLoad").stop(true).animate({ 'margin-top': '250px', 'opacity': '0' }, 400);
            $(".cover").css({ 'display': 'none', 'opacity': '0' });
        }

    </script>
</head>
<body>
    <div class="loading">
        <a class="action" href="javascript:void(0);">点击加载特效</a></div>
    <div class="cover">
    </div>
    <div id="ajaxLoad" class="showLoad">
        <div class="loadAll">
            <img src="image/waiting.gif">加载中，请稍候...</div>
    </div>
</body>
</html>
三、DEMOjava
　　点击下载jquery