Hi Hai,
Thanks for you tips. Unfortunately they don't work for us.
We need to support IE9, using SAPUI5 and NetWeaver Gateway. Our upload service requires 2 header parameters, which are slug and the X-CSRF. All is possible with using ajax request as stated above and works in chrome and firefox etcetera, but not in IE9. Your tips are usefull and will work with for example using an iframe (since the fileAPI is not there yet in IE9). However, we need to be able to add the headers which is not possible for an iframe. We researched also using the XHR request, but also here adding the headers doesn't work in IE9. Would you probably have other suggestions?
Unfortunately using an other browser is not an option.
Thanks!
Wim