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TutorialsMastering Ajax, Part 2: Make asynchronous requests with JavaScript and Ajax
In the last article of this series (see Resources for links), you were introduced to the Ajax applications and looked at some of the basic concepts that drive Ajax applications. At the center of this was a lot of technology that you probably already know about: JavaScript, HTML and XHTML, a bit of dynamic HTML, and even some DOM (the Document Object Model). In this article, I will zoom in from that 10,000-foot view and focus on specific Ajax details.
In this article, you'll begin with the most fundamental and basic of all Ajax-related objects and programming approaches: The XMLHttpRequest object. This object is really the only common thread across all Ajax applications and -- as you might expect -- you will want to understand it thoroughly to take your programming to the limits of what's possible. In fact, you'll find out that sometimes, to use XMLHttpRequest properly, you explicitly won't use XMLHttpRequest. What in the world is that all about?
In this article, you'll begin with the most fundamental and basic of all Ajax-related objects and programming approaches: The XMLHttpRequest object. This object is really the only common thread across all Ajax applications and -- as you might expect -- you will want to understand it thoroughly to take your programming to the limits of what's possible. In fact, you'll find out that sometimes, to use XMLHttpRequest properly, you explicitly won't use XMLHttpRequest. What in the world is that all about?
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