HTML5 is the next generation of HTML standard version, 4 and 5 have a lot in common, have HTML build from scratch, than 4 upgrade to 5 to be convenient.
Here are 10 key differences:
1.HTML5 recently very hot, but the standard is still in place, 4 10 years more, not 6 change;
2. Simplified declarations, such as <! DOCTYPE html>;
3.<canvas> tags instead of flash, a tag can interact with the user, and Flash Player needs a bunch of code and plug-ins;
4. Clearly indicate the structure of the Web page, add
5. Added <section><article>, SEO-friendly;
6. Add <menu><fignre> The former creates a traditional menu, or a toolbar, and a menu, which makes the text image typesetting more professional;
7. Added <audio><video> tags, said to be the most useful;
8. New forms, HTML5 to <form><forminput>, modify a large number of attributes;
9. Delete <b><font>, use CSS instead;
10. Delete <frame><center><big>