how to create a progress bar using php output buffering and jquery? i been searching this for weeks, i am desperate to learn this, this is a very big help for me, is someone the here share some codes? i know the this will need to script. i have tried sereval code for my client side script: var request = new XMLHttpRequest(); request.addEventListener("progress", updateProgress, false); function updateProgress(e) { var percent = (e.loaded / e.total) * 100; /** update the with of the progress bar **/ } and to my server side, i dont know how. but actually i want to use this for a mysql query so that i can see the progress of my query and another thing is i dont know how to use output buffering. somebody help me on this please.