Find all elements that have a certain data attribute (regardless of value)

问题

I have a form with a bunch of text elements, some of which have a data attribute set.

I want to loop through all the elements that have that attribute, extracting the attribute.

I've created a fiddle here.

var textInputs = $(':text');
alert('found ' + textInputs.length + ' textInputs');

var datas = textInputs.find('[data-foo]');
alert('found ' + datas.length + ' datas');

I'm finding the text elements, but my selector on the data attribute is returning no elements.

Ideas would be helpful...

回答1:

The [data-foo] selector is correct, but you should use it in a filter, instead of in a find:

var datas = textInputs.filter('[data-foo]');

See working fiddle here

回答2:

http://jsfiddle.net/qjb3V/

     var datas = $(':text[data-foo]');

来源：https://stackoverflow.com/questions/24441156/find-all-elements-that-have-a-certain-data-attribute-regardless-of-value