This is the second part of the series “Zencart + Ajax made easy”, you can read the previous part here

In this second part we will continue to focus on the server-side code, we start by addressing how we should handle Zencart’s default redirection method, and then we will see how we can process only blocks of code we want to return while skipping the rest.
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In the first part, I will address several server-side isses and possible solutions I encounter while trying to use Ajax in Zencart

1. Which format should be used to return data?
2. How to Implement ajax on current zencart pages/functions without breaking the default behaviors?
3. How to allow fall-back to the traditional methods when the browser does not support javascript?
4. How to load and return only certain parts to reduce load time(which is one of the main points of using Ajax anyway)

Lets use the contact us page as an example, throughout the tutorial we will build a simple Ajax based contact form.
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