How to check if an element is droppable, draggable or other ‘ble’?

You could also use jQuery data() like this..

if ($(elem).data('draggable')) {
        alert("yes");
}
else {
        alert("no");
}

if ($(elem).data('fooable')) {
        alert("yes");
}
else {
        alert("no");
} 

See it here: http://bootply.com/60153