进度条

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>Javascript Progress Bar Demo - jb51.net</title>
        <script type="text/javascript" src="http://www.jb51.net/jslib/jquery/jquery.js"></script>
        <style type="text/css">
            #progress {background: white; height: 20px; padding: 2px; border: 1px solid green; margin: 2px;}
            #progress span {background: green; height: 16px; text-align: center; padding: 1px; margin: 1px;
                display: block; color: yellow; font-weight: bold; font-size: 14px; 0%;}
        </style>

        <script type="text/javascript">

            var progress_node_id = "progress";
            function SetProgress(progress) {
                if (progress) {
                    $("#" + progress_node_id + " > span").css("width", String(progress) + "%");
                    $("#" + progress_node_id + " > span").html(String(progress) + "%");
                }
            }

            var i = 0;
            function doProgress() {
                if (i > 100) {
                    alert("Progress Bar Finished!");
                    return;
                }

                if (i <= 100) {
                    setTimeout("doProgress()", 100);
                    SetProgress(i);
                    i++;
                }
            }

            $(document).ready(function() {
                doProgress();
            });
        </script>
</head>

<body>
    <h1>Javascript 进度条 Demo</h1>
    <p>原理就是使用 Javascript 控制 SPAN CSS 的宽度（以及其他的样式），详细信息可以参见链接：<a
href="http://www.jb51.net/article/13993.htm">http://www.jb51.net/article/13993.htm</a></p>
    <div id="progress"><span> </span></div>
</body>
</html>