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我有一个项目，按计划按计划在网页上显示滑动图像、视频、flash、html 页面、音频等。每个时间表都有一些设计，每个设计都不过是这些组件之一（视频/音频/图像/flash/html）。我有用于计划的外部 for 循环和用于计划下的设计的内部 forloop。内部 for 循环几乎没有条件来检查媒体类型并在 jsp 页面上使用 html div 元素显示相应的数据。通过使用后端 java 代码，我得到了每个设计的正确路径。我现在想要的是为下一个时间表清除 div 元素。我尝试使用 subDiv.remove()，它无法显示视频并显示其他视频。寻求你的好建议来解决这个问题。需要在新的时间表到来时相应地清除时间表。

<html>
    <head>
        <meta http-equiv="Content-Type" consatent="text/html; charset=UTF-8">
        <title>JSP Page</title>

        <!--        <script>-->
        <script type="text/javascript" src="${path}/jsp/jquery-1.10.2.js"></script>

    <script type="text/javascript">
       // clock function() to display the clock value
    </script>


    <style type="text/css">
        .flags{color:blue;}
        marquee div{float:left; padding:0 0 0 10px;}
    </style>
</head>
<body>

    <div style="position: absolute" id="mainDiv">

        <c:forEach items="${List}" var="schedule" varStatus="status"> <%-- Loop for template(schedule) starts here --%>

            <div id="subDiv">
                <br><br>${status}--------------- Template------------------------------${design.templateId}<br><br>
                <c:forEach items="${schedule.designTabModel}" var="design" varStatus="status1"><%-- Loop for design starts here --%>
                     <% Thread.sleep(5000);%>
                    <div id="subDiv1">
                        <c:choose>

                            <c:when test="${design.ctrType == 'pictureBox'}">
                                <%--<div style="position: absolute; top: ${design.ctrLocationX};left: ${design.ctrLocationY}">--%>
                                <c:forEach items="${design.files}" var="file" varStatus="status">
                                    <%--<img src="${file}" style="position: absolute"--%>
                                    ----------Picture Box template id is: ${design.templateId}<br>
                                    --File - ${file} - Location : X is  - ${design.ctrLocationX} - Y is  - ${design.ctrLocationY}<br>

                                </c:forEach>
                            </c:when>

                            <c:when test="${design.ctrType == 'label'}">

                                ----------Label Box template id is: ${design.templateId}<br>
                                --Text Content: - ${design.ctrText} - Location : X is  - ${design.ctrLocationX} - Y is  - ${design.ctrLocationY}<br>

                                <div id="labelid" class='flags' style="position: absolute; left: ${design.ctrLocationX}; top: ${design.ctrLocationY};">
                                    <MARQUEE BEHAVIOR='SCROLL' HEIGHT='${design.ctrHeight}' WIDTH='${design.ctrWidth}' BGColor='yellow' scrollamount="1" onmouseover="this.stop();" onmouseout="this.start();">
                                        <div id="l1">${design.ctrText}</div>
                                    </MARQUEE>
                                </div>
                            </c:when>

                            <c:when test="${design.ctrType == 'html'}">

                                ----------Html Box template id is: ${design.templateId}<br>
                                --Url: - ${design.ctrText} - Location : X is  - ${design.ctrLocationX} - Y is  - ${design.ctrLocationY}<br>

                                <div id="content" style="position: absolute; left: ${design.ctrLocationX}; top: ${design.ctrLocationY}">
                                    <iframe src="${design.ctrText}" name="frame2" id="frame2" frameborder="0" marginwidth="0" marginheight="0" scrolling="auto" onload="" allowtransparency="false" width="${design.ctrWidth}" height="${design.ctrHeight}">
                                    </iframe>
                                </div> 
                            </c:when>


                            <c:when test="${design.ctrType == 'clock'}">

                                ----------Clock Box template id is: ${design.templateId}<br>
                                - Location : X is  - ${design.ctrLocationX} - Y is  - ${design.ctrLocationY}<br>

                                <div id="clockbox" style="position: absolute; background-color:green; border:1px solid black; padding:10px; left: ${design.ctrLocationX}; top: ${design.ctrLocationY}; height: ${design.ctrHeight}; width: ${design.ctrWidth}">                              
                                    <script>GetClock();</script>
                                </div>
                            </c:when>        

                            <c:when test="${design.ctrType == 'audio'}">
                                <c:forEach items="${design.files}" var="file" varStatus="status">
                                    ----------Audio template is: ${design.templateId}<br>
                                    --File - ${file}<br>
                                    <br>

                                </c:forEach>
                            </c:when>

                            <c:when test="${design.ctrType == 'video'}">
                                <c:forEach items="${design.files}" var="file" varStatus="status">
                                    ----------Video template is: ${design.templateId}<br>
                                    --File  - ${file}- Location X is  - ${design.ctrLocationX} - Y is  - ${design.ctrLocationY}<br>
                                    <div id="videofile" style="position: absolute; left: ${design.ctrLocationX}; top: ${design.ctrLocationY}" 
                                         <object width="${design.ctrWidth}" height="${design.ctrHeight}"
                                            type="video/x-ms-asf" 
                                            classid="CLSID:6BF52A52-394A-11d3-B153-00C04F79FAA6">
                                            <param name="autostart" value="1">
                                            <param name="autosize" value="1">
                                            <embed type="application/x-mplayer2" src="${file}" width="${design.ctrWidth}" height="${design.ctrHeight}" autostart="true" showcontrols="true" pluginspage="http://www.microsoft.com/Windows/MediaPlayer/" loop="loop" scale="tofit"></embed>
                                        </object>
                                    </div>
                                </c:forEach>
                            </c:when>

                            <c:when test="${design.ctrType == 'flashMovie'}">
                                <c:forEach items="${design.files}" var="file" varStatus="status">
                                    ----------Flash template is ${design.templateId}<br>
                                    --File name is - ${file} - Location X is  - ${design.ctrLocationX} - Y is  - ${design.ctrLocationY}<br>
                                </c:forEach>
                            </c:when>

                            <c:otherwise>

                            </c:otherwise>
                        </c:choose>
                    </div>

                </c:forEach>

            </div>
                <script>

                   $("#subDiv").remove(); // clearing the schedule

                </script>
        </c:forEach>
    </div>

`

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