尝试运行下一个上一个按钮以播放列表媒体播放器代码中的视频，出现错误
Trying to Run Next Previous Button to Play Video From List Media Player Code Giving Error?
我正在尝试从列表中运行视频，我使用两个按钮从列表中运行下一个以前的视频，默认情况下它运行第一个，但它给了我错误，我也感到困惑，所以我需要帮助让它运行让我告诉它我的视频列表代码，
<div>
<SELECT id=cancion onchange=PlayIt() size=20 name="cancion" style="width: 470; color:#C0C0C0; height:22; background-color:#000000;">
<option value=Peace1.wmv>. . Countdown</option>
<option value=Fire.wmv>. . Time Crisis 4</option>
<option value=Water.wmv>. . Need For Speed</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/assessment.wmv>. . Meli's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/k_0001.wmv>. . Keldin's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/Skateboard_Tricks_Video.wmv>. . Chris's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/video_0001.wmv>. . Salinina's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/JORDAN_MOVES_23.wmv>. . Josh's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/robots_video_0001.wmv>. . Sam's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/Unexpected2.wmv>. . Unexpected</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/By_brendan_wu.wmv>. . Brendan's Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/rebecca01.wmv>. . Rebecca's Video 1</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/rebecca_robots002.wmv>. . Rebecca's Video 2</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/robotics_videoo_002.wmv>. . Robotics Video</option>
<option value=http://liamalexander.com/computing/gallery/albums/video/joys_01.wmv>. . The Joys of Spring</option>
</SELECT>
</div>
我们有两个按钮用于切换视频，
<button type="button" onclick="showDiv(1 - 1)">Previous</button>
<button type="button" onclick="showDiv(1 + 1)">Next</button>
现在将在"下一个"或"上一个"按钮上运行的脚本，
function showDiv(which) {
var currentImage = 1;
for(i = 0; i < 13; i++) {
//document.getElementById("image"+i).style.display="none";
document.getElementById("music1").innerHTML='<object id="mediaPlayer" width="470" height="400" '
+'classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95" '
+'codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701" '
+'standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject">'
+'<param name="fileName" value="'+document.getElementById('cancion'+i).value+'">'
+'<param name="animationatStart" value="true">'
+'<param name="transparentatStart" value="true">'
+'<param name="autoStart" value="1">'
+'<param name="showControls" value="true">'
+'<param name="loop" value="true">'
+'<param name="ShowStatusBar" value="true">'
+'<param name="ShowPositionControls" value="true">'
+'<param name="enableContextMenu" value="1" />'
+'<param name="fullScreen" value="0" />'
+'<embed type="application/x-mplayer2" '
+'pluginspage="http://microsoft.com/windows/mediaplayer/en/download/" '
+'bgcolor="darkblue" showcontrols="true" showpositioncontrols="true" showstatusbar="true" showgotobar="true" width="470" height="400" '
+'src="'+document.getElementById('cancion'+i).value+'" autostart="true" designtimesp="5311" loop="true">'
+'</embed>'
+'</object>'
}
//in the next 2 lines, you make sure which isn't lower than 1, and isn't greater than the number of images
if(which < 1) which = 1;
if(which > 13) which = 13;
document.getElementById("image" + which).style.display = "block";
currentImage = which;
}
我正在使用三个视频"和平1"火"水"你可以在这里使用任何视频，你必须检查这个代码
希望尽快收到您的来信，提前谢谢
以下是您应该使用的脚本：
<script type="text/javascript">
var currentTrack = 1;
function showDiv(direction) {
if(direction == "prev") {
// previous pressed
if(currentTrack > 1) {
currentTrack--;
}
} else {
// next pressed
if(currentTrack < 13) {
currentTrack++;
}
}
document.getElementById("image" + currentTrack).style.display = "block";
document.getElementById("music1").innerHTML='<object id="mediaPlayer" width="470" height="400" '
+'classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95" '
+'codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701" '
+'standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject">'
+'<param name="fileName" value="'+document.getElementById('cancion').options[currentTrack].value+'">'
+'<param name="animationatStart" value="true">'
+'<param name="transparentatStart" value="true">'
+'<param name="autoStart" value="1">'
+'<param name="showControls" value="true">'
+'<param name="loop" value="true">'
+'<param name="ShowStatusBar" value="true">'
+'<param name="ShowPositionControls" value="true">'
+'<param name="enableContextMenu" value="1" />'
+'<param name="fullScreen" value="0" />'
+'<embed type="application/x-mplayer2" '
+'pluginspage="http://microsoft.com/windows/mediaplayer/en/download/" '
+'bgcolor="darkblue" showcontrols="true" showpositioncontrols="true" showstatusbar="true" showgotobar="true" width="470" height="400" '
+'src="'+document.getElementById('cancion').options[currentTrack].value+'" autostart="true" designtimesp="5311" loop="true">'
+'</embed>'
+'</object>'
}
</script>
按钮也相应更改：
<button type="button" onclick="showDiv('prev')">Previous</button>
<button type="button" onclick="showDiv('next')">Next</button>
我想告诉你的几件事：
1. 对于属性，请使用 " 或 ''
2. 不要做 onclick="，通过 JavaScript 绑定事件处理程序（我保留了相同的示例，以便您可以学习一些东西来寻找如何绑定事件处理程序的答案）
祝你好运！
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