FormData in IE 11 not defined

I have the following script to get the file data from a input type of file: ``` var uploadfiles = $("#upFile").get(0); var uploadedfiles = uploadfiles.files; var fromdata = new FormData(); for (var i = 0; i < uploadedfiles.length; i++) { fromdata.append(uploadedfiles[i].name, uploadedfiles[i]); } // ajax code omitted that uploads file ``` This works great in all browsers I have tested with, except IE 11. In this it doesn't understand what FormData() is?? I have read quite a few different workarounds online now but NONE of them work, whatever I try nothing is able to get the details of the file from the input. Has anyone else had this that can help? Even if I try using jQuery to get the object then the 'files' is undefined for some reason. EDIT: Reading more online, it seems it could be because IE doesn't give access to the input until the form has been submitted, however I am using ajax to upload the file so I can't really submit it. EDIT2: I should also mention that this code is called on the change event of the file input, not sure if it has any relevance but best to mention it