I am using a multiselect with options grouped together.
<select title="Fruits" multiple="multiple" id="fruits" name="fruits[]">
    <option selected="selected" label="All" value="">All</option>
    <optgroup label="" class="fruit">
        <option label="apple" value="1">Apple</option>
        <option label="pear" value="2">Pear</option>
        <option label="orange" value="3">Orange</option>
    </optgroup>
    <optgroup label="" class="berries">
        <option label="strawberry" value="4">Strawberry</option>
        <option label="raspberry" value="5">Raspberry</option>
        <option label="blueberry" value="6">Blueberry</option>
    </optgroup>
</select>
I've tried $(this).find("option:selected").parent().attr("label") which only returns the optgroup of the first selected option, meaning if Strawberry and Pear were both selected, optgroup '.fruit' would be returned on both accounts.
Using jQuery, how do I get the optgroup of each selected option?