来源:【孟子E章】 - CSDNBlog
<script type="text/javascript">
function CheckSilverlightInstalled()
{
var isSilverlightInstalled = false;
try{
try{
var slControl = new ActiveXObject('AgControl.AgControl'); //检查IE
isSilverlightInstalled = true;
}
catch(e){
if(navigator.plugins["Silverlight Plug-In"]) //检查非IE
{
isSilverlightInstalled = true;
}
}
}
catch(e){}
return isSilverlightInstalled;
}
alert("是否安装了 Silverlight 插件?" + CheckSilverlightInstalled())
</script>