Recently, three major browser vendors—Apple, Opera, and the Mozilla Foundation—came together as the Web Hypertext Application Technology Working Group (WhatWG) to develop an updated and upgraded version of classic HTML. W3C took note of these developments and started its own next-generation HTML effort with many of the same members. Eventually, the two efforts will likely be merged.This new version of HTML is called HTML 5
HTML 5 doesn’t have namespaces or schemas. Elements don’t have to be closed. Browsers are forgiving of errors. A p is still a p, and a table is still a table. Old friends like div remain, but now HTML includes section, header, footer, and nav as well. em, code, and strong are still present, but so are meter, time, and m. img and embed continue to be used, but now there are video and audio too.The new structural elements of HTML5 include aside, figure, and section. New inline elements include time, meter, and progress. New embedding elements include video and audio. New interactive elements include details, datagrid, and command.
HTML 5 is designed to degrade gracefully in browsers that don’t support it. It offers real benefits to page authors today while promising even more to page readers tomorrow as browsers are slowly upgraded.
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