.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.

.find()

Get the descendants of each element in the current set of matched elements, filtered by a selector, jQuery object, or element.

.is()

Check the current matched set of elements against a selector, element, or jQuery object and return true if at least one of these elements matches the given arguments.

.nextUntil()

Get all following siblings of each element up to but not including the element matched by the selector, DOM node, or jQuery object passed.

.parentsUntil()

Get the ancestors of each element in the current set of matched elements, up to but not including the element matched by the selector, DOM node, or jQuery object.

.prevUntil()

Get all preceding siblings of each element up to but not including the element matched by the selector, DOM node, or jQuery object.

.promise()

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