I've read a few examples about how to upload a file to a sharepoint 2013 document library without submitting the form itself. This question is a result of my research (I wont tag it as sharepoint specific as the part what I'm asking about has nothing really to do with sharepoint itself).
In all examples which I found about file uploads without using form-submit I saw that FileReader is being used. Now from what I've read this is only possible with IE 10+. As one of my core jobs is to make sure that the program is IE 9 compatible, I'm running into a problem now.
As an example for one of the methods I found: http://blogs.msdn.com/b/uksharepoint/archive/2013/04/20/uploading-files-using-the-rest-api-and-client-side-techniques.aspx
In there the file is uploaded with the help of the FileReader (which gets the file content), then the file is transformed into a format that the sharepoint webservices can read and then uploaded.
So as stated my problem is that I need to be IE 9 compatible: Is there an alternative to using FileReader for uploading a file without submitting the form itself? (especially as I need to get the contents of the file, modify them and then use them to fill the data of a webservice)