.css()

Get the value of a computed style property for the first element in the set of matched elements or set one or more CSS properties for every matched element.

.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.

.next()

Get the immediately following sibling of each element in the set of matched elements. If a selector is provided, it retrieves the next sibling only if it matches that selector.