$.data(this,'foo') != $(this).data('foo') with html5 data attributes

[anonymous]

$.data(this,'foo') return "undefined" with html5 data attributes $(this).data('foo') return correct value with html5 data attributes

See it: ​http://jsfiddle.net/4LWvB/

[ajpiano]

Thanks for taking some time to contribute to the jQuery project, but this is a known, documented, and intended behaviour. From the ​docs for jQuery.data(elem, key)

"Regarding HTML5 data-* attributes: This low-level method does NOT retrieve the data-* attributes unless the more convenient .data() method has already retrieved them."

[dmethvin]

#10111 is a duplicate of this ticket.