Uploading Files with Ajax

Uploading Files with Ajax To use the XML HTTP request features in your application, you must learn to upload files on the background with Ajax: Define the input elements for the file upload. Use the upload() method for the button click event to upload the file when the button is clicked. In the upload() method, create a FormData interface instance, and add the file element with the attached file into it. Use the send() method to send the FormData to the server.

Read full article from Uploading Files with Ajax