Allow "data-" attributes in dijit widgets

[peirix]

When creating a dijit widget with some custom HTML5 "data-" attributes, they are removed in the widget, which is really unlucky as I have javascript that uses these "data-" attributes for hooks and information.

[Mark Wubben]

Dijits replace the original DOM node by that in the template, so typically custom attributes (unless defined on the Dijit class) don't survive.

Personally I prefer to treat data-* attributes as regular custom attributes which Dijit picks up, rather than as special attributes that are re-added to the rendered Dijit's domNode.

What is your JavaScript? doing that needs these attributes on the domNode, and are you perhaps better served by creating a subclass of the widget in question?

[peirix]

Right now I'm using it to store a url inside a button that sits in a form. The url is used to do a AJAX call to somewhere else than the form action url.

[bill]

I don't understand your description, please attach a test case.

It seems like you've defined a custom widget with attributes like

// widget's URL parameter
"data-url": ""

and then you are using the parser in conjunction with markup like this?

<div dojoType="myButton" data-url="my url">

[bill]

Closing for lack of test case, please reopen after attaching one.

[bill]

See also #11490.