The goal of this tutorial is to show you how to build an AJAX powered shopping cart. However, it will not be production ready. The back end requirements vary from site to site far too much to write an effective tutorial. Instead, we are going to focus on the AJAX parts. The back end code in this tutorial acts as scaffolding for us to build the AJAX functionality, however, it can be built off of to meet your own site's requirements. In the last section, we'll discuss some possible next steps to implementing this in your own websites.

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The other thing to note is that this tutorial will not explain all the details. A firm grasp of HTML, CSS, and some basic PHP is expected. By basic I mean variables, arrays, control structures, and basic OOP. Some knowledge of Javascript is a plus. We'll walk through and break down the trickier bits of PHP and Javascript, but will gloss over the basic stuff like CSS styling. Links to documentation and other relevant resources will be sprinkled throughout wherever relevant.

The final thing to note is that the order codes (or product codes) used in this tutorial are completely arbitrary.

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