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Javascript with PHP / HTML - Idiot Question

Posted by MikeUK, 01-15-2009, 08:39 AM
Hi all I'm fairly comfortable with PHP, but I'm having a (probably very simple) issue with a javascript event handler function. I've had it before but got round it other ways. I don't think this is an issue with any certain piece of code, more about a basic gap in my knowledge. I suspect this will be a 2 second solution for someone more js experienced than me. Here's an example: (...part of a php file...) ?>

:

When running this, clicking on an option leads to this error in the Firefox error console: "Error: document.selectformname is undefined" Clearly this is me not knowing something about how the DOM works. I've put the js script in different places within the file with no change. I wonder if it is something to do with it being a php file within a chain of other php files? Hence this file has no / tages (which all the internet examples use). Anyone able to assist? Thanks in advance.
Posted by Xeentech, 01-15-2009, 09:08 AM
The
has name="selectionformname", but in script you're using document.selectformname. Simple typo? Or was this not actually your full code, and a mock up for us to work? Working with DOM and forms based on name="" is a mantaince nightmare (IMO). Why not, element to the function?
Posted by MikeUK, 01-15-2009, 09:25 AM
That was a typo, and yes it is a mock up (because the original code is surrounded by a lot of other php stuff that would've made this post twice as long), so the undefined error wasn't due to that (but well spotted - should have seen that as I was pretty careful with this code). Your idea sounds much better. Will give that a go. Thanks!
Posted by MikeUK, 01-15-2009, 05:31 PM
Xeentech, thank you, that worked much better.

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