Author: Tom (Page 199 of 428)

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In the previous post, I talked through the basics of setting of Ajax in WordPress on both the server-side and the client-side and how we can echo statements back to the client-side and why this is useful.

What I didn’t cover, though, was why this is important and how we can take advantage of it for gracefully handling any errors that occur throughout our code.

Whenever you’re dealing with a number of different variables such as user input, values of input fields, talking to the database, and network connections, there are a number of places in which the request and/or the response can fail.

And in those cases, we need to be able to make sure our project handles the situation well so we’re able to diagnose the problem and so our users aren’t left wondering what went wrong.

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I’ve talked about Ajax in WordPress in previous posts and it’s pretty well-documented in the Codex, so I don’t want to belabor the point on how to actually implement it.

Instead, the point of this post is to discuss how to implement custom response messages – or custom error messages – so you’re able to try/catch or gracefully handle the case when a request to the server fails.

That is, given the examples in the previous links we know how to implement Ajax in WordPress, but how do we handle the cases when something goes wrong? It’s not enough to simply write something out via console.log – after all, that’s meaningless to the user – but wouldn’t it be nice to actually display some type of message to let the user know what went wrong and how they can address it?

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Last week, I wrote a short post asking What Is the Vendor Directory? which yielded a number of great responses, but it also resulted in a number of different questions, all of which were related, but none of which could be covered in that specific post.

For example, the article asked?

• When do I know when to use a lib directory versus a vendor directory?
• Should the vendor directory sit in the root of the project or should it exist in the root of, say, the JavaScript directory?
• What about an assets directory?
• Can lib and vendor co-exist?

And though some of these were answered in the comments and some of these answers can be found elsewhere, it did result in another question about the assets directory.

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