Check to see if a DOM node is within an XML document (or is an XML document).

Selects all elements that are hidden. Elements can be considered hidden for several reasons:

Add handlers to be called when the Deferred object is resolved. The deferred.done()

Attach an event handler function for one or more events to the selected elements. The .on()

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

Select all elements that have at least one child node (either an element or text). This is the inverse

Insert every element in the set of matched elements to the end of the target. The

Holds or releases the execution of jQuery's ready event. The $.holdReady() method allows

Replace each element in the set of matched elements with the provided new content and return the set of elements that was removed.

Selects the first matched element. The :first pseudo-class is equivalent to :eq(