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Javascript & Ajax For Dummies [UPDATED • HANDBOOK]

A second character, a swift-moving messenger with a backpack labeled , zipped into view.

"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?"

The agent is hired and the path to the server is opened.

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 acknowledges with a status code—hopefully the famous 200 OK .

The data has fully arrived and is ready for JS to plug into the page. 🛠️ Dave’s First Masterpiece AJAX Crash Course (Vanilla JavaScript)

We've Helped Millions of People

In the past 7 years, we have helped millions of users successfully retrieve their login passwords from their locked PC, locked PDF document and Excel file, etc., and helped them regain their access rights to device and documents. At the same time, hundreds of tech websites and blogs also mentioned our brands and products to the readers, helping us to move towards the world. This is not only an affirmation for our hard work, but also an encouragement for us to keep striving.

Years of experience
7+

Years of experience

JavaScript & AJAX for Dummies
128+

Countries and territories

Satisfied users
16+ million

Satisfied users

Tech site mentioned
211+

Tech site mentioned

A second character, a swift-moving messenger with a backpack labeled , zipped into view.

"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?"

The agent is hired and the path to the server is opened.

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 acknowledges with a status code—hopefully the famous 200 OK .

The data has fully arrived and is ready for JS to plug into the page. 🛠️ Dave’s First Masterpiece AJAX Crash Course (Vanilla JavaScript)