Here's a little routine I use. The server sends back some minimal JSON
code that I extract from the iframe that the upload form was posted to.
This is a condensed version. If you need more of the code (html/js), let
me know.
If there's a more prototype-y way to do
"document.getElementsByTagName('body')[0]", please let me know and I'll
change my code.
var Uploader = Class.create({
initialize: function(form, target, dir, mgr) {
this.form = form;
this.target = target; //iframe
this.dir = dir;
this.mgr = mgr;
$(this.form).observe('submit', this.upload.bind(this));
$(this.target).observe('load', this.complete.bind(this));
},
upload: function() {
// clear iFrame
$(this.target).update('');
// build form
var f = $(this.form);
f.submit();
},
complete: function() {
try {
var c =
frames[this.target].document.getElementsByTagName('body')[0].innerHTML.evalJSON();
var res = c['success'];
}
catch(e) {
alert('Error. File(s) not Uploaded');
return;
}
// evaluate res here.
}
})
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