I would like to write in english on this website, it's now done. This first post deals with JavaScript and asynchronous request (AJAX) to make the Facebook effect at the bottom of the timeline. An automatic process updates the timeline with old friend status when we reach the bottom of the page.
This process is pretty cool and i would like to get a similar stuff on my website. In theory, we just have to get scroll positions and page height. Once we get these values, we have to determine where we are in the page. If we reach the bottom, an asynchronous request gets old posts and we just have to display them below.
I chose to attach an event listener on the scroll event. I used this code :
if(window.addEventListener)
window.addEventListener("scroll", changePager, false);
else if (window.attachEvent)
window.attachEvent("onscroll", changePager);
else window.onscroll = changePager;
Après avoir regardé une excellente conférence d'Eric Daspet sur 
