Detecting Information Card Support (CardSpace!) in a browser
I hacked out this a few weeks back, and never got around to publishing it. I've not decided that this is the 'official' way to detect Information Card support in a browser, but it'll do until I can think of something better.
I'd say something like, "see how it detects support in other browsers too?" except that I'm not thinking many people have a CardSpace plugin for another browser yet. But you can trust me--It works!
<html>
<head>
<SCRIPT LANGUAGE="Javascript">
|
function AreCardsSupported()
{
var IEVer = -1;
if (navigator.appName == 'Microsoft Internet Explorer')
if (new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})")
.exec(navigator.userAgent) != null)
IEVer = parseFloat( RegExp.$1 );
if( IEVer >= 6 )
{
var embed = document.createElement("object");
embed.setAttribute("type", "application/x-informationcard");
if( ""+embed.issuerPolicy != "undefined" )
return true;
return false;
}
if( IEVer < 0 && navigator.mimeTypes && navigator.mimeTypes.length)
{
x = navigator.mimeTypes['application/x-informationcard'];
if (x && x.enabledPlugin)
return true;
}
return false;
}
function ShowDetection()
{
if( AreCardsSupported() )
alert( "Information Cards are supported by this browser :D" );
else
alert( "Information Cards are NOT supported by this browser :(" );
}
|
</SCRIPT>
<body onload="ShowDetection()">
</body>
</head>
