.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.

Types

This page documents data types appearing in jQuery function signatures, whether defined by JavaScript itself or further restricted by jQuery. Unless explicitly stated otherwise, jQuery functions require primitive values where applicable, and do not accept their Object-wrapped forms. If you want to study these concepts in depth, take a look at MDN. You should be … Continue reading

.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.