共用方式為

nextTrack Method

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This topic documents a feature of HTML+TIME 2.0, which is obsolete as of Windows Internet Explorer 9.

Advances the media-playing container to the next playItem object in the playList collection and begins playing that track.

Advances the media-playing container to the next playItem object in the playList collection and begins playing that track.

Syntax

playList.nextTrack()

Return Value

No return value.

Remarks

Using this method on the last track causes the playList to stop playing tracks. If the element has a repeatCount greater than 0, the next repeat iteration begins.

Example

<HTML XMLNS:t="urn:schemas-microsoft-com:time">
<HEAD>
<TITLE>nextTrack and prevTrack Methods</TITLE>
<?IMPORT namespace="t" implementation="#default#time2">

<STYLE>
    .time{ behavior: url(#default#time2);}
</STYLE>
<SCRIPT LANGUAGE="JavaScript">
function updateBtns() {        
    if(m1.currTimeState.isActive){
        b0.disabled=true;
        b1.disabled=false;
        b2.disabled=false;
        b3.disabled=false;
    }else{
        b0.disabled=false;
        b1.disabled=true;
        b2.disabled=true;
        b3.disabled=true;
    }
}
function updateFields(){
    title1.innerText = 'Title: ' + m1.playList.activeTrack.title;
    author1.innerText = 'Author: ' + m1.playList.activeTrack.author;
    abstract1.innerText = 'Abstract: ' + m1.playList.activeTrack.abstract;
    copyright1.innerText = 'Copyright: ' + m1.playList.activeTrack.copyright;
}
function emptyFields(){
    title1.innerText = 'Title: ';
    author1.innerText = 'Author: ';
    abstract1.innerText = 'Abstract: ';
    copyright1.innerText = 'Copyright: ';
}
</SCRIPT>
</HEAD>

<BODY onload="updateBtns()" TOPMARGIN=0 LEFTMARGIN=0 BGPROPERTIES="FIXED"
    BGCOLOR="#FFFFFF" LINK="#000000" VLINK="#808080" ALINK="#000000">
...
<t:media id="m1" begin="0;indefinite;"
    src="/workshop/samples/author/behaviors/media/media.asx"
    onmediacomplete="updateFields();updateBtns();"/>

<span id="title1">Title:</span><BR>
<span id="author1">Author:</span><BR>
<span id="abstract1">Abstract:</span><BR>
<span id="copyright1">Copyright</span><BR><BR>

<BUTTON id="b0" onclick="m1.beginElement();updateFields();updateBtns();">
    Start</BUTTON>
<BUTTON id="b1" onclick="m1.playList.nextTrack();updateFields();">
    Next Track</BUTTON>
<BUTTON id="b2" onclick="m1.playList.prevTrack();updateFields();">
    Previous Track</BUTTON>
<BUTTON id="b3" onclick="m1.endElement();emptyFields();updateBtns();">
    Stop</BUTTON>
</BODY>
</HTML>

Code example: http://samples.msdn.microsoft.com/workshop/samples/author/behaviors/nextprev.htm

Applies To

playList

See Also

Introduction to HTML+TIME, activeTrack, prevTrack