php - how stop transfering form data when form is submitted to internal iframe? -

I have an upload file form and an iframe form presented with an af script, which has the goal of iFrame . I want to stop uploading the file when the user clicks on a stop uploading button. How can I stop transferring data in iframe?

You have to break the connection and the only way to do this is to

  Btn.onclick = function () {reloading the page with window.location.reload (true); }