Does :first make the selection faster? In other words, does it stop the selection after the first item is found or it filters only after all selections are found?
I am a beginner in jQuery. On the API doc (http://docs.jquery.com/ Selectors), it says some selectors return Element and other return Array <Element>. To me they all return Array <Element>. Even #id returns an array of one DOM Element. Am I correct? confused? Thanks.