[thelist] Javascript to alter a select list

raanders at mailporter.net raanders at mailporter.net
Wed Jul 13 13:34:18 CDT 2005


Christian Heilmann wrote:
> This general defiance is as unhelpful as some other developers' "use
> AJAX for everything" attitude.

Actually my reference to AJAX was for a totally different question from 
a couple of weeks ago.  Sorry.

> Actually this example could greatly be improved with  an XHR layer. 
> The issues:

After some research and reading I see what you mean.

> - As the app stands now it is dependent on JavaScript to work and has
> crucial information in JavaScript - I can read the  promotional codes
> by reading the JS source.

Personally , and application-wise , we may force Javascript.  Another 
portion of the product requires Javascript so the signup is a good 
filter that will preclude disappointed users/customers.

> - To  circumvent that you need to send the form to the  server and
> generate the dropdown on the server side - this would also enable you
> to do the promotional lookup in a database
> - If you  keep the dropdown generation in one include you can call the
> include when you load the page and via XHR when you leave the field
> and replace the dropdown via the DOM.

I was hoping I understood XMLHttpRequest ( XHR ) correctly.  This is 
exactly what I need.  Again using it will filter the non-Javascript 
users out early.

> That way both the JavaScript and the non JavaScript visitor will get
> the dropdown options and you are safe from XSS.

Another new term/mnemonic.  What does it stand for / mean?


Thanks Chris.


Rod
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