I'm working on a highly asynchronous and compartmentalized component
system where components each manage their own list of assets including
js and css files.
I've recently started using jQuery to implement popup dialogs that use
an Ajax callback to populate the dialog with one of my components.
This component needs to work in both a full page context and within a
div based dialog. I don't want the component itself to have to know
whether it's being used in one context or the other.
As it turns out, the first component I loaded into my jquery.ui.dialog
itself uses jquery and dutifully pulled in the jQuery.js library. It
seems the jquery ajax handler handles embedded <script> tags. This
summarily clobbered my first instance of jQuery causing all kinds of
".dialog is not a function" errors.
Adding a conditional around jquery.js to test if it's already been
loaded seems to work like a champ in both FF and MSIE:
if ( typeof( jQuery ) == 'undefined' )
{
...rest of jquery.js...
}
The question is, is there some reason this isn't an acceptable
safeguard?
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