Javascript & Ajax For Dummies Apr 2026

"I'm JavaScript," the character chirped. "I'm the logic of the browser. I can make things move, validate forms, and create pop-ups. But if you want to talk to the server without that annoying page blink, you need my friend, ."

The agent reaches the server and says "Hello!" The server acknowledges with a status code—hopefully the famous 200 OK .

Suddenly, a glowing book appeared on his desk: by Andy Harris. The cover promised to help him build websites that "work like pros".

Dave opened the book, and a tiny, animated character named hopped off the page.