isComponentInstalled Method

Retrieves whether the specified component is available.

dhtml语法

bInstalled = clientCaps.isComponentInstalled(sID, sIDType [, sMinVersion])

Parameters

sID Required. Stringthat specifies any of the component identifiers listed in the Detectable Components in Internet Explorer document.
sIDType Required. Stringthat specifies the case-insensitive type of the identifier specified in sID, or the following value:
componentid Active Setup identifier of the component.
sMinVersion Optional. Stringthat specifies the version number of the component.

Return Value

Returns one of the following values:
true The component is installed and its version number is greater than or equal to the specified sMinVersion.
false The component is not installed or its version number is less than the specified sMinVersion.

Remarks

Only Microsoft® Internet Explorer components are detected by this method. If a component identifier of a third-party component is specified, the method returns false.

DHTML代码范例

This example uses the isComponentInstalled method to determine whether the Microsoft virtual machine is installed.
<HTML xmlns:IE>
<HEAD>
<STYLE>
@media all {
IE\:clientCaps {behavior:url(#default#clientcaps)}
}
</STYLE>
</HEAD>
<BODY>
<IE:clientCaps ID="oClientCaps" />
<SCRIPT>
bMSvmAvailable = oClientCaps.isComponentInstalled("{08B0E5C0-4FCB-11CF-AAA5-00401C608500}",
"ComponentID");
</SCRIPT>
:
</BODY>
This feature requires Microsoft® Internet Explorer 5 or later. Click the following icon to install the latest version. Then reload this page to view the sample.

是否符合公共标准

There is no public standard that applies to this method.

Applies To

clientCaps

更多语法参考

about client capabilities, using dhtml behaviors, compareversions, getComponentVersion