.promise()

Return a Promise object to observe when all actions of a certain type bound to the collection, queued or not, have finished.

.data()

Store arbitrary data associated with the matched elements or return the value at the named data store for the first element in the set of matched elements.

.hover()

Bind one or two handlers to the matched elements, to be executed when the mouse pointer enters and leaves the elements.

.closest()

For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree.