.clone() returns a deep copy of the element on which it is called.
That means that you get a new copy of the element itself, but also all of its children (and their children, et cetera).
If you call .clone(true), all of the elements' events, attributes, and data are cloned too.
//write this function as described
//in the exercise instructions
//remember that we want to clone
//data and events, too!
function cloneAndAppend($elementToClone, $elementToAppendItTo) {
$elementToAppendItTo.append($elementToClone.clone(true));
}
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