Javascript & Ajax — For Dummies The agent reaches the server and says "Hello!" The server acknowledges with a status code—hopefully the famous 200 OK . The agent is hired and the path to the server is opened. "Not at all!" JS laughed. "If you know HTML and CSS, you're halfway there. We just use four simple steps to get things moving." 🕵️ The Secret Agent’s 4-Step Mission JavaScript & AJAX for Dummies Once upon a time in the land of Static-Web, a young developer named Dave sat in front of his monitor, sighing. Every time a visitor clicked a button on his site, the entire page vanished for a second, blinked white, and then reloaded everything from scratch just to show one tiny line of text. It was like a waiter at a restaurant who, every time you asked for a clean fork, insisted on taking your food back to the kitchen, remodeling the dining room, and then bringing everything back out again. "There has to be a better way," Dave muttered. Suddenly, a glowing book appeared on his desk: by Andy Harris. The cover promised to help him build websites that "work like pros". The agent reaches the server and says "Hello The server starts handing over the data. "AJAX stands for ," the messenger explained, though he whispered that most people use JSON nowadays because it's faster and lighter. "Think of me as a secret agent. While you’re looking at the page, I run to the server in the background, grab exactly what you need, and bring it back without anyone ever seeing the page reload". Dave was skeptical. "Is it hard to learn?" "If you know HTML and CSS, you're halfway there Dave opened the book, and a tiny, animated character named hopped off the page.