Why AJAX? a Intuitive and natural user interaction No clicking required Mouse movement is a sufficient event trigger Partial screen update"replaces the"click, wait, and refresh"user interaction model Only user interface elements that contain new information are updated (fast response) The rest of the user interface remains displayed without interruption(no loss of operational context) Data-driven(as opposed to page-driven) Ul is handled in the client while the server provides dataWhy AJAX? ◼ Intuitive and natural user interaction ◼ No clicking required ◼ Mouse movement is a sufficient event trigger ◼ "Partial screen update" replaces the "click, wait, and refresh" user interaction model ◼ Only user interface elements that contain new information are updated (fast response) ◼ The rest of the user interface remains displayed without interruption (no loss of operational context) ◼ Data-driven (as opposed to page-driven) ◼ UI is handled in the client while the server provides data