We've seen that a Web page is composed of elements — headings, paragraphs of text, Images, butTons, and so on — and that you can listen for events that happen To these elements. For example, you could add a listener To a butTon, and it will run when the user clicks the butTon....blocks Next We've seen that a web page is composed of elements...headings, paragraphs of text, images, buttons, and so on — and that...