共用方式為

isActive Property

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

Gets a value that indicates whether the element is currently active on the timeline.

Syntax

[ bActive = ] currTimeState.isActive

Possible Values

bActive Boolean that receives one of the following values.
true
Element is active on the timeline.
false
Element is not active on the timeline.

The property is read-only. The property has no default value.

Example

This example uses the isActive property to get a value that indicates whether the media element is active on the timeline.

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

<STYLE>
    .time{ behavior: url(#default#time2);}
</STYLE>
<SCRIPT LANGUAGE="JavaScript">
function checkIsActive(){
    isActive1.innerText='isActive: ' + m1.currTimeState.isActive;
    if(m1.currTimeState.isActive){
        b0.disabled=true;
        b1.disabled=false;
    }else{
        b0.disabled=false;
        b1.disabled=true;
    }
}
</SCRIPT>
</HEAD>

<BODY TOPMARGIN=0 LEFTMARGIN=0 BGPROPERTIES="FIXED" BGCOLOR="#FFFFFF"
    LINK="#000000" VLINK="#808080" ALINK="#000000">

<t:video id="m1" begin="0;indefinite;"
    src="/workshop/samples/author/behaviors/media/shuttle3.wmv"
    onend="checkIsActive();" onbegin="checkIsActive();" fill="remove"/>

<BR><BR>
<SPAN id="isActive1">isActive:</SPAN>
<BR>

<BUTTON id="b0" onclick="m1.beginElement();">Restart</BUTTON>
<BUTTON id="b1" onclick="m1.endElement();">Stop</BUTTON>

</BODY>
</HTML>

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

Applies To

currTimeState

See Also

Introduction to HTML+TIME, activeElements, isOn, isPaused, state, stateString