Get list of data-* attributes using javascript / jQuery -

given arbitrary html element 0 or more data-* attributes, how can 1 retrieve list of key-value pairs data.

e.g. given this:

<div id='prod' data-id='10' data-cat='toy' data-cid='42'>blah</div> 

i able programmatically retrieve this:

{ "id":10, "cat":"toy", "cid":42 } 

using jquery (v1.4.3), accessing individual bits of data using $.data() simple if keys known in advance, not obvious how 1 can arbitrary sets of data.

i'm looking 'simple' jquery solution if 1 exists, not mind lower level approach otherwise. had go @ trying to parse $('#prod').attributes lack of javascript-fu letting me down.

update

customdata need. however, including jquery plugin fraction of functionality seemed overkill.

eyeballing source helped me fix own code (and improved javascript-fu).

here's solution came with:

function getdataattributes(node) {     var d = {},          re_dataattr = /^data\-(.+)$/;      $.each(node.get(0).attributes, function(index, attr) {         if (re_dataattr.test(attr.nodename)) {             var key = attr.nodename.match(re_dataattr)[1];             d[key] = attr.nodevalue;         }     });      return d; } 

update 2

as demonstrated in accepted answer, solution trivial jquery (>=1.4.4). $('#prod').data() return required data dict.

actually, if you're working jquery, of version 1.4.3 1.4.4 (because of bug mentioned in comments below), data-* attributes supported through .data():

as of jquery 1.4.3 html 5 data- attributes automatically pulled in jquery's data object.

note strings left intact while javascript values converted associated value (this includes booleans, numbers, objects, arrays, , null). data- attributes pulled in first time data property accessed , no longer accessed or mutated (all data values stored internally in jquery).

the jquery.fn.data function return of data- attribute inside object key-value pairs, key been part of attribute name after data- , value been value of attribute after been converted following rules stated above.

i've created simple demo if doesn't convince you: http://jsfiddle.net/yijiang/wvfsg/