Remove multiple html5 data-attributes with jquery

Question

So jquery api says the following:

Removing data from jQuery's internal .data() cache does not effect any HTML5 data- attributes in a document; use .removeAttr() to remove those.

I have no problem removing a single data-attribute.

<a title="title" data-loremIpsum="Ipsum" data-loremDolor="Dolor"></a>
$('a').removeAttr('data-loremipsum');

---

The question is, how can I remove multiple data-attributes?

More details:

1. The starting point is that I have multiple ( let's say.. 60 ) different data-attributes and I want to remove all of them.

2. Preferred way would be to target only those data-attributes that contain the word lorem. In this case lorem is always the first word. (or second if you count data-)

3. Also I'd like to keep all the other attributes intact

Answer 1

// Fetch an array of all the data
var data = $("a").data(),
    i;
// Fetch all the key-names
var keys = $.map(data , function(value, key) { return key; });
// Loop through the keys, remove the attribute if the key contains "lorem".
for(i = 0; i < keys.length; i++) {
    if (keys[i].indexOf('lorem') != -1) {
        $("a").removeAttr("data-" + keys[i]);
    }
}

Fiddle here: http://jsfiddle.net/Gpqh5/