in javascript
var xhr = new XMLHttpRequest();
xhr.open("POST", "FileUploadHandler.ashx");
var fd = new FormData();
fd.append("sFileTitle", document.getElementById('txtFileTitle').value);
xhr.send(fd);
so you would append data in form data using key and values pair
var fd = new FormData();
fd.append("sFileTitle", document.getElementById('txtFileTitle').value);
Dropzone.options.uploadDropzone({
// ...
sending: function(file, xhr, fd){
// but how to add my tags string to the params?
// any methods like setting the header:
// xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest")?
}
})