HTML5: What it is, why it matters, and how we can use it today

(CSS3 isn’t the same thing as HTML5, it’s just a partner in crime)

Semantic
Web

API & Offline
Multimedia
Storage

1. The browser is becoming an operating system. It needs to be able
to start acting like one. Offline storage is a big part of its
transition.
2. Multimedia support (video & audio) for low-power devices
(phones, “tablets”). Adobe really hasn’t been able to get Flash
right.
3. Google.
4. XHTML 2.0 is dead.
5. Vendor dependency.
6. Patent dependency (though h264 doesn’t really help things).
7. “Div”-itis isn’t just ugly, it also just plain sucks for real document
interpretation and contextualization.
8. And on, and on, and on.

• YouTube (WebM and h264 video)
• Scribd (semantics)
• Gmail (notifications)
• Vimeo (h264 video)
• Facebook (History API, Geolocation API)
• Apple.com (a little bit of everything)
• Pretty much every (true) mobile website

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML
1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-
strict.dtd">

<body>
<header>
<hgroup>
<h1>Page title</h1>
<h2>Page subtitle</h2>
</hgroup>
</header>

<nav>
<ul>
Navigation...
</ul> True story: HTML 2.0 had semantic
</nav>
<section> tags like <menu>, which were later
<article> deprecated.
<header>
<h1>Title</h1>
</header>
<section>
Content...
</section>
</article>
</section>

<footer>
Copyright ©
<time datetime="2010-11-08">2010</time>.
</footer>
</body>

HTML5: What it is, why it matters, and how we can use it today

HTML5: What it is, why it matters, and how we can use it today

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HTML5: What it is, why it matters, and how we can use it today