nextTrack Method | DHTML中文手册 |
Advances the media-playing container to the next track, or playitem object, in the playlist collection, and begins playing that track.
dhtml语法
object.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.
dhtml代码范例
<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="../../common/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>
是否符合公共标准
This method is a Microsoft extension to Synchronized Multimedia Integration Language (SMIL) .
Applies To
playList, t:MEDIA, t:PAR, t:REF, t:SEQ
更多语法参考
introduction to html+time, activetrack, prevTrack