逆向思维
在APPLET里定义一public方法,用JS来调用,如果找不到对象,说明JVM未安装。
否则。
在APPLET里定义一public方法,用JS来调用,如果找不到对象,说明JVM未安装。
否则。
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if (window.clientInformation.javaEnabled() == true )
// Java 已启用,可运行小程序。
</SCRIPT>
Scripting [ bEnabled = ] clientCaps.javaEnabled Possible ValuesbEnabled Boolean that receives one of the following values: false Microsoft VM is not enabled.
true Microsoft VM is enabled.
The property is read-only. The property has no default value.ExampleThis example displays all the properties available through the clientCaps behavior.<HTML xmlns:IE>
<HEAD>
<STYLE>
@media all {
IE\:CLIENTCAPS {behavior:url(#default#clientCaps)}
}
</STYLE>
<SCRIPT>
function window.onload()
{
sTempStr = "availHeight = " + oClientCaps.availHeight + "\n" +
"availWidth = " + oClientCaps.availWidth + "\n" +
"bufferDepth = " + oClientCaps.bufferDepth + "\n" +
"colorDepth = " + oClientCaps.colorDepth + "\n" +
"connectionType = " + oClientCaps.connectionType + "\n" +
"cookieEnabled = " + oClientCaps.cookieEnabled + "\n" +
"cpuClass = " + oClientCaps.cpuClass + "\n" +
"height = " + oClientCaps.height + "\n" +
"javaEnabled = " + oClientCaps.javaEnabled + "\n" +
"platform = " + oClientCaps.platform + "\n" +
"systemLanguage = " + oClientCaps.systemLanguage + "\n" +
"userLanguage = " + oClientCaps.userLanguage + "\n" +
"width = " + oClientCaps.width + "\n" ;
oPre.innerText = sTempStr;
}
</SCRIPT>
</HEAD>
<BODY>
<H1>clientCaps Behavior Sample</H1>
<P>This example shows how to use the new <B>clientCaps</B>
behavior, introduced in Microsoft Internet Explorer 5, to obtain
client capabilities information. The following is a sampling of the
information that can be obtained:</P>
<IE:CLIENTCAPS ID="oClientCaps" />
<PRE id="oPre"></PRE>
</BODY>
</HTML>