20. Ajax Basics
Despite appearances, setting up basic Ajax functionality is not that difficult. It involves three main parts: making the server call, having the server process the call, and then filtering the data that comes back. This can be as simple as grabbing a chunk of HTML code from the server to place on the current page, or as complex as submitting multiple variables to a database to update a 3D map of the earth. Let’s start with the simple stuff.
In this chapter, you will learn how to do the following:
• Fetch content directly from the server and place it onto the current page
• Send data from the current page back to the server and get a response to place on the page
• Filter responses from the server for different situations
• Set ...
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