AJAX file upload
The main reason why webmasters like to use AJAX technology to submit user data input is that unlike conventional form submit it can transfer data to the server without refreshing webpage. This technology can also capable to display the response from server side to the client computer. But AJAX technology can only transfer text data in UTF-8 format. So upload file using AJAX technology is not possible. But using iframe object it is possible to create an interface over a HTML form such that it
