[removed] detect uploading form image finished

Question

Is there any chance to handle when form submit finished(ok or error)? I want to upload images or mulitpart data without javascript

Answer 1

Since I've not access to the server side, I need to solve this problem on the client side. That's why I couldn't use cookies.
I did these steps to achieve success (I used jQuery to create/bind element/events. I didn't use AJAX to send form data):

1. I have iframe in my HTML (pay attention, there is no iframe in HTML):

2. I created iframe when submit clicked (I tried to avoid unnecessary onload event firing). Notice, after adding iframe to body, I added attribute onload. Because if I add onload attribute while creating iframe, it instantly fired when I append iframe to body. Now closePopup is called once when server responded.

$('#send_message_form').submit(function() {
    var customIframe = $('');
    customIframe.attr({
      'id': "multipart_uploader_iframe",
      'name': "multipart_uploader_iframe"
    });

    $('body').append(customIframe);
    customIframe.attr({
      'onload': "closePopup();"
    });
    return true;
});

3. When server responds with responseText (if it returns with text/plain type), responseText will be put in iframe body. Then iframe's onload event fires (of course our closePopup function). In my case server responded with OK or other error text:

// Generated by CoffeeScript
window.closePopup = function() {
    var error, response, _ref, _ref1;
    setTimeout(function() {
      return $('#multipart_uploader_iframe').remove();
    }, 500);
    try {
      response = (_ref = (_ref1 = frames['multipart_uploader_iframe']) != null ? 
        _ref1.document.getElementsByTagName("body")[0].innerHTML : void 0) != null ? _ref : "";
      if (response.indexOf("OK") !== -1) {
        // close here your popup or do something after successful response
        alert('Message has been sent successfully.');
        return $(".popup").dialog('close'); 
      }
    } catch (_error) {
      error = _error;
      throw new Error(error);
    }
    return alert("Error occurred while sending message.");
};

I'm really inspired by this article. I hope this helps someone who has the same problem.

PS: It worked on IE8