Get all values for a specific data attribute

Question

As simple as the title states, i want to get all values for for elements that contain a specific data-attribute . Any solutions I've found have been directly related to querying the value of the attribute which is not what I want.

So for example - if I have multiple elements with the attribute data-help-id how do I retrieve all those attributes either as an array or an object?

Answer 1

I would use .map to transform your jQuery object containing elements with the attribute you want into an array of values:

var $elements = $('[data-help-id]')
    , values = $elements.map(function () {
          return $(this).data('help-id');
      }).get();

Example: http://jsfiddle.net/68kcg/