Allow jQuery.data() to update data-attributes

[rodneyrehm]

jQuery.data() should be able to (selectively) update data-attributes in order to make something like

$('.selector').data('foobar', 1);

selectable like

$('[data-foobar]').hide();

see  modified code and  jsFiddle for a possible solution (introducing a new argument 'updateAttr').

[dmethvin]

Nope. By design we don't write to those attributes under any circumstances, and doing so in a consistent way would affect all the data APIs plus incur a big performance penalty. Use .attr().

 http://www.learningjquery.com/2011/09/using-jquerys-data-apis

[rodneyrehm]

I'm terribly sorry to have bothered anyone with this. There's a much simpler (and imho cleaner) solution to this:  http://jsfiddle.net/rodneyrehm/XV33m/