How do I detect if ActiveX is enabled in the browser of client?

Question

How do I detect if ActiveX is enabled in the browser of client?

I tried following code, but it\'s not working in Firefox.

window.ActiveXObject not wo         


        

Answer 1

Below code should work, It is working on IE6 & FF 3.6.12 atleast.

if(typeof(window.ActiveXObject)=="undefined"){
    alert("ActiveX Object not supported");
}else {
    alert("ActiveX Object  supported");
}

Answer 2

What isn't working? Is that throwing an error in FF? How about

var hasAX = "ActiveXObject" in window;

Answer 3

ActiveX objects do not exist in anything but Internet Explorer. If you're trying to use them for XMLHTTPRequests, use the XMLHTTPRequest() object instead, using feature detection.

if ("ActiveXObject" in window) { /* Do ActiveX Stuff */ }
else { /* ActiveX doesnt exist, use something else */ }

Answer 4

It seems Firefox simply skips scripts containing ActiveX objects:

<script><!--
  var activeXsupport = "ActiveX not supported";
// --></script>

<script><!--
  var dummy = new ActiveXObject ('WScript.Shell');
  activeXsupport = "ActiveX supported";
// --></script>

<script><!--
  alert (activeXsupport);
// --></script>    

So this gives me "supported" on IE11 and "not supported" on Firefox.

[Edit:] Since it also throws an error message on Firefox if the console is opened with [F12], I suggest this improvement:

<script><!--   
  var dummy = ''; var hasActiveX = false;  
  try {dummy = new ActiveXObject ('WScript.Shell'); hasActiveX = true;}
  catch (err) {dummy = ''; hasActiveX = false;}
  alert ('hasActiveX = ' + hasActiveX);
// --></script>   

Edge Chromium supports ActiveX if it is made the default browser in settings and reloading in Internet Explorer Mode via "More Tools" is enabled:

edge://settings/defaultBrowser 

Gerolf