Computer Science / Unit 10 CS 0545 short lesson, about 20 seconds
AJAX
Captions available
The idea
Asynchronous JavaScript and XML exchanges small amounts of data between client and server — communication with the web server without refreshing the page.
In practice
A live map updating one bus position moves a whisper of data, not the whole page again.
Where people slip
Small exchanges changed what web apps could feel like.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Something wrong in this lesson? Flag it · Sources for Computer Science