I have some unrelated questions about expando properties...
I notice that many widgets set a 'role' attribute on the element(s).
Is this related to ARIA or a similar standard? Is it recommended that
a role be set on widget elements? If so, are there any naming
convention to follow? (Sorry if this is in the ARIA documentation -
haven't gotten to that yet)
I also notice that some widgets uses attributes to store data, like
ui.dialog...
var saveScroll = { scrollTop: this.element.attr('scrollTop'),
scrollLeft: this.element.attr('scrollLeft') };
this.element.attr(saveScroll);
I just *removed* all expando properties and switched to using $
(elem).data(...) instead. The only expando I kept is for users to hard-
code an 'instance name' on button-elements to facilitate auto-binding,
but I treat this attribute as 'read-only'.
Is there any widget guideline for using data() VS attributes? I
realize expandos are fine for simple values, but want to know how
aggressively I should avoid them.
Thanks in advance.
/Kevin
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