XMLHttpRequest file upload not working in IE11

Question

Hi I have the following JS on my page. It is working fine on chrome and firefox. but its not working on Internet Explorer 11. I\'m a salesforce developer and I don\'t know much

Answer 1

In the line:

var xhr = new XMLHttpRequest();

Change for:

var xhr = new ActiveXObject('Msxml2.XMLHTTP');

Now, your file upload work only in Internet Explorer 11.

Maybe, for you file upload to work in all navigator's (that support XMLHTTPRequest), try this:

if('ActiveXObject' in window){
   return new ActiveXObject('Msxml2.XMLHTTP');
}else{
   return new XMLHttpRequest();
}

Source: http://www.purplesquirrels.com.au/2014/06/local-ajax-calls-ie11/.