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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>HTML5 — Intro</title>
<meta name="author" content="Rogier van der Linde - ikdoeict.be">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="library/reveal/css/reveal.min.css">
<link rel="stylesheet" href="library/reveal/css/theme/rogier.css" id="rogier">
<link rel="stylesheet" href="library/highlight/styles/vs.css">
<link rel="stylesheet" href="css/common.css">
<link rel="stylesheet" href="css/15_html5_intro.css">
</head>
<body>
<!-- SLIDES -->
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h1>INTRO</h1>
<small>use the arrow keys to navigate; press space for slide overview<br /></small>
<figure style="width: 415px; margin: 0 auto">
<img src="img/15_html5_intro/icon.jpg" alt="" class="border" />
<figcaption>Pave the cowpaths</figcaption>
</figure>
<footer>
<a href="http://www.ikdoeict.be/">ikdoeict.be</a> — <a href="mailto:[email protected]">[email protected]</a>
</footer>
</section>
<section>
<section>
<h1>INTRO</h1>
<h2>Say hello to HTML5</h2>
<ul class="chapterlist">
<!-- to be filled by Javascript -->
</ul>
</section>
<section id="slidequake" data-toc-title="Quake in your browser">
<h2>Say hello to HTML5 (1)</h2>
<video class="center" src="demos/15_html5_intro/media/quake.mp4" controls poster="img/15_html5_intro/quake.png" width="600">
Your browser dows not support the video tag
</video>
<div class="tooltip">
<div>
Mozilla also recently ported the popular Unreal 3 gaming engine to Javascript, check <a href="http://www.youtube.com/watch?v=BV32Cs_CMqo#!">this video</a>
<br><br>
You can also <a href="http://www.quakejs.com/">play quake here</a>
</div>
</div>
</section>
<section data-toc-title="Some buzzwords">
<h2>Say hello to HTML5 (2)</h2>
<ul>
<li>
some buzzwords:
<ul>
<li>HTML canvas</li>
<li>HTML audio & video</li>
<li>WebGL 3D graphics</li>
<li>CSS3 animations & filters</li>
<li>web sockets</li>
<li>file API, audio API</li>
<li>localStorage, sessionStorage</li>
<li>webSQL</li>
<li>notifications</li>
<li>geolocation</li>
</ul>
</li>
<li class="no-style">...and many <i>many</i> more</li>
</ul>
</section>
<section id="slideclassic" data-toc-title="Classic applications are dead">
<h2>Say hello to HTML5</h2>
<ul>
<li>
shift from desktop to web-based applications
</li>
</ul>
<div class="images">
<img src="img/15_html5_intro/rockPC.jpg" alt="" id="rockPC" />
<img src="img/15_html5_intro/arrow.png" alt="" id="arrow" />
<img src="img/15_html5_intro/googledocs.jpg" alt="" id="googledocs" />
</div>
<ul>
<li class="fragment arrow">
some notorious examples: <a href="https://www.google.be/intl/nl/docs/about/">google docs</a>, <a href="https://webmail.odisee.be">webmail</a>, <a href="https://www.dropbox.com">Dropbox</a>, <a href="https://www.picozu.com/editor/">Picozu image editor</a>...
</li>
</ul>
<div class="tooltip">
<div>
Webbased applications have <i>huge</i> advantages over classic applications:
<ul class="v-style">
<li>you always have the latest version</li>
<li>no updates needed</li>
<li>no program installation needed</li>
<li>little hardware requirements</li>
<li>accessible everywhere</li>
<li>uniform technology makes it easier to use and intergrate existing libraries and modules</li>
</ul>
Some drawback:
<ul class="x-style">
<li>Internet connection needed (although offline applications are possible)</li>
<li>performance issues, especially with large files</li>
<li>difficult to protect your code</li>
</ul>
</div>
</div>
</section>
<section id="slideflash" data-tags="plugins, flash, silverlight" data-toc-title="Plugins are dead">
<h2>Say hello to HTML5</h2>
<ul>
<li>
Plugins are dead
</li>
</ul>
<img src="img/15_html5_intro/flash.jpg" alt="" id="flash" />
<img src="img/15_html5_intro/arrow.png" alt="" class="arrow" />
<img src="img/15_html5_intro/html5.png" alt="" id="html5" />
<div class="tooltip">
<div>
Some of the companies that do or will not support Flash or Silverlight anymore:
<ul>
<li>Apple: iPhone and iPad</li>
<li>Microsoft IE10 metro version (although they do support a whitelist of Flash sites like Youtube)</li>
<li>Google Chrome mobile version</li>
<li>Android >= 4.0 </li>
</ul>
The reason why designers like Flash:
<ul class="v-style">
<li>does not require much programming skills</li>
<li>they like the vector-graphics look and feel</li>
<li>they like the graphic tools</li>
</ul>
Some disadvantages of Flash:
<ul class="x-style">
<li>lot of work keeping all plugins up-to-date</li>
<li>not accessible for the blind</li>
<li>impossible to bookmark a single page</li>
<li>backbutton usually does not work anymore</li>
<li>loads slower and more bandwidth heavy</li>
<li>harder for the programmer to maintain</li>
<li>dramatic for your Google ranking</li>
<li>sometimes unstable & regular crashes</li>
<li>eats your battery (mobile!)</li>
</ul>
And Microsoft's Silverlight, does anyone even remember?
</div>
</div>
</section>
<section data-toc-title="New HTML">
<h2>but what <i>is</i> HTML5?</h2>
<ul>
<li>
<em>New HTML</em>:
<ul>
<li>markup (new tags and attributes)</li>
<li>semantics (microdata, link relations, ARIA)</li>
<li>webforms</li>
<li>audio & video</li>
</ul>
</li>
</ul>
<ul class="arrow">
<li>
jump to <a href="16_html5_html.html">part 1: HTML</a>
</li>
</ul>
</section>
<section data-toc-title="New CSS">
<h2>but what <i>is</i> HTML5?</h2>
<ul>
<li>
<em>New CSS</em>:
<ul>
<li>typography and layout (gradients, mulitcolumn, rounded corners, shadows...)</li>
<li>webfonts</li>
<li>filters</li>
<li>transitions, transforms and animations</li>
</ul>
</li>
</ul>
<ul class="arrow">
<li>
jump to <a href="02_html5_css.html">part 2: CSS3</a>
</li>
</ul>
</section>
<section data-toc-title="New Javascript tools">
<h2>but what <i>is</i> HTML5?</h2>
<ul>
<li>
<em>New Javascript tools</em>:
<ul>
<li>language enhancements (querySelectorAll, requestAnimationFrame...)</li>
<li>graphics (canvas, WebGl, SVG)</li>
<li>storage (localStorage, sessionStorage, webSQL, IndexedDB)</li>
<li>application development (web workers, application cache, file API, audio API, notifications, drag drop, web sockets)</li>
<li>mobile development (geolocation)</li>
</ul>
</li>
</ul>
<ul class="arrow">
<li>
jump to <a href="18_html5_js.html">part 3: Javascript</a>
</li>
</ul>
</section>
</section>
<section>
<section>
<h1>INTRO</h1>
<h2>Using HTML5</h2>
<ul class="chapterlist">
<!-- to be filled by Javascript -->
</ul>
</section>
<section data-toc-title="Can I use...?">
<h2>Can I use...? (1)</h2>
<ul>
<li>
How to decide whether to use a technique or not?
Parties involved:
<ul>
<li><em>W3C</em> → draft and publish the standards (actually not very important factor)</li>
<li><em>browser vendors</em> → implement standards and experiment with new features</li>
<li><em>visitors</em> → choose device and browser (<a href="http://www.netmagazine.com/features/developers-guide-browser-adoption-rates">adoptation rate</a>)</li>
<li><em>website owner</em> → target audience and graceful degradation expectations</li>
<li><em>open source community</em> → available code snippets, frameworks...</li>
<li><em>you</em> → skills, favorites...</li>
</ul>
</li>
</ul>
</section>
<section data-toc-title="">
<h2>Can I use...? (2)</h2>
<ul>
<li>
Get a general idea of browser support:
<ul>
<li><a href="http://peacekeeper.futuremark.com/run.action">Peacekeeper</a> (performance test)</li>
<li><a href="http://html5test.com/">HTML5test</a> (compatibility test)</li>
<li><a href="http://html5readiness.com/">html5readiness.com</a> (nice visualization)</li>
<li><a href="http://css3test.com//">CSS3test</a> (compatibility test)</li>
</ul>
</li>
<li>
Exellent quick reference:
<ul>
<li><a href="http://www.caniuse.com/">caniuse.com</a></li>
<li><a href="http://html5please.com/">html5please.com</a></li>
</ul>
</li>
<li>
If you're desperate to know all the details:
<ul>
<li><a href="http://www.quirksmode.org/compatibility.html">quirksmode.org</a></li>
<li><a href="http://en.wikipedia.org/wiki/Comparison_of_layout_engines_%28HTML5%29">wikipedia.org</a></li>
</ul>
</li>
</ul>
</section>
<section data-toc-title="">
<h2>Can I use...? (3)</h2>
<p style="text-align:center"><img src="img/15_html5_intro/comic2.png" alt="" /></p>
</section>
<section>
<h2>Vendor prefixes</h2>
<ul>
<li>
Use vendor prefixes for experimental CSS3 (check latest list on <a href="http://shouldiprefix.com/">shouldiprefix.com</a>):
<pre class="bigger"><code class="language-css">.rotated {
-webkit-transform: rotate(30deg); /* Ch <36, Saf 5.1+, iOS < 9.2, An =<4.4.4 */
-ms-transform: rotate(30deg); /* IE 9 */
transform: rotate(30deg); /* IE 10, Fx 16+, Op 12.1+ */
}</code></pre>
</li>
<li>
Invented to allow different implementations
</li>
<li>
Further reading:
<ul>
<li><a href="http://peter.sh/experiments/vendor-prefixed-css-property-overview/">Prefixes overview</a></li>
<li><a href="http://leaverou.github.com/prefixfree/">Javascript -prefix-free library</a></li>
<li><a href="http://www.sitepoint.com/w3c-css-webkit-prefix-crisis/#fbid=T5wivW11Yr3">The Impending CSS Vendor Prefix Catastrophe</a></li>
<li><a href="http://www.mightymeta.co.uk/no-more-need-for-some-css3-vendor-prefixes/">No More Need For Some CSS3 Vendor Prefixes</a></li>
</ul>
</li>
</ul>
</section>
<section data-toc-title="Feature fallback">
<h2>Feature fallback (1)</h2>
<ul>
<li>
More useful than compatibility tables is feature detection with a fallback for unsupporting browsers.
</li>
<li>
The most popular feature detection tool is <a href="http://www.modernizr.com/">Modernizr</a>
</li>
<li>
Provides Javascript feature detection API and adds CSS classes to the <code><html></code> element:
</li>
</ul>
<img src="img/15_html5_intro/modernizr.png" alt="Modernizr" class="border" />
<div class="tooltip">
<div>
Two terms used for fallbacks are <i>shim</i> and <i>polyfill</i>, where a polyfill tries to mimic the standards-based API, and a shim is a more general fix for a missing feature, albeit with a different and less future-proof code. More <a href="http://www.netmagazine.com/features/making-html5-and-css3-work-polyfills-and-shims">reading on polyfills and shims here</a>.
</div>
</div>
</section>
<section data-toc-title="">
<h2>Feature fallback (2)</h2>
<ul>
<li>
Fallback example for a CSS3 property using Modernizr's <code>.no-boxshadow</code> class:
<pre class="bigger"><code class="language-css">/* CSS3 box shadow */
.box {
border: none;
box-shadow: #666 1px 1px 1px;
}
/* fallback: simulate box shadow using borders */
.no-boxshadow .box {
border-bottom: 1px solid #666;
border-right: 1px solid #777;
}
</code></pre>
</li>
</ul>
</section>
<section data-toc-title="">
<h2>Feature fallback (3)</h2>
<ul>
<li>
Fallback example for a HTML5 form control using <a href="https://github.com/zoltan-dulac/html5Widgets">html5Widgets polyfill</a>:
<pre class="bigger"><code class="language-html" style="height: 200px"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>HTML5 date time examples</title>
<link rel="stylesheet" href="lib/html5Widgets/js/jscalendar-1.0/calendar-win2k-1.css" />
<!-- Needed for Date/Time Elements -->
<script src="lib/html5Widgets/js/jscalendar-1.0/calendar.js"></script>
<script src="lib/html5Widgets/js/jscalendar-1.0/lang/calendar-en.js"></script>
<script src="lib/html5Widgets/js/jscalendar-1.0/calendar-setup.js"></script>
<!-- What glues all the above together -->
<script src="lib/modernizr-1.5.min.js"></script>
<script src="lib/html5Widgets/js/EventHelpers.js"></script>
<script src="lib/html5Widgets/js/html5Widgets.js"></script>
</head>
<body>
<form action="#">
<dl>
<dt><label for="birthday">Birthday: </dt>
<dd><input type="datetime" name="birthday" id="birthday" /></dd>
</dl>
</form>
</body>
</html></code></pre>
<div class="demolink"><a href="demos/15_html5_intro/polyfills/index.html">demo</a></div>
</li>
</ul>
<ul class="arrow">
<li>
for a list of available fallbacks see <a href="https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills">Paul Irish's list</a>
</li>
</ul>
</section>
<section data-toc-title="">
<h2>Feature fallback (4)</h2>
<ul>
<li>
Fallback example for a Javascript feature using <a href="http://yepnopejs.com/">yepnope</a> script loader:
<pre class="bigger"><code class="language-javascript">yepnope({
test: Modernizr.geolocation,
yep: 'normal.js',
nope: ['polyfill.js', 'wrapper.js']
});</code></pre>
</li>
<li>
Some Internet Explorer specific fixes:
<ul>
<li><a href="http://selectivizr.com/">selectivizr.com</a>: fixes IE 6–8 pseudoclasses and attribute selectors</li>
<li><a href="http://css3pie.com/">css3pie.com</a>: fixes many CSS3 decoration features for IE 6–9</li>
</ul>
</li>
</ul>
</section>
<section data-toc-title="Graceful degradation">
<h2>Graceful degradation (1)</h2>
<ul>
<li>
Sometimes a suited fallback is not available or too complex
</li>
<li>
But: websites <a href="http://dowebsitesneedtolookexactlythesameineverybrowser.com/">do not need to look identical in every browser</a>
</li>
<li>
Example for CSS3 animations (see <a href="http://farukat.es">farukat.es</a>):
</li>
<li class="no-style clearfix">
<div class="comparevideo">
<div class="video">
<video controls muted>
<source src="demos/15_html5_intro/chrome.mp4" type="video/mp4">
<source src="demos/15_html5_intro/chrome.ogv" type="video/ogg">
</video>
<p class="caption">supported in Chrome19</p>
</div>
<div class="video">
<video controls muted>
<source src="demos/15_html5_intro/ie.mp4" type="video/mp4">
<source src="demos/15_html5_intro/ie.ogv" type="video/ogg">
</video>
<p class="caption">unsupported but still acceptable in IE9</p>
</div>
</div>
</li>
</ul>
</section>
<section data-toc-title="">
<h2>Graceful degradation (2)</h2>
<ul>
<li>
Example for CSS3 rounded corners and box shadow:
</li>
<li class="no-style">
<figure class="comparefigure">
<img src="img/15_html5_intro/degradation2.jpg" alt="degradation example" class="border" />
<img src="img/15_html5_intro/degradation1.jpg" alt="degradation example" class="border" />
<figcaption>the unsupported version on the right is still acceptable</figcaption>
</figure>
</li>
<li>
This is called <em>graceful degradation</em><br />
<ul>
<li>code for the best browser first</li>
<li>provide acceptable fallback for lesser browsers</li>
<li>'top-down' approach</li>
</ul>
</li>
</ul>
</section>
<section data-toc-title="Graceful degradation">
<h2>Graceful degradation (3)</h2>
<ul>
<li>
These small differences may even help pushing users to better browsers
</li>
<li>
Differences are ok as long as they are non-critical:<br />
<div class="bluetable" id="tblCritical">
<table>
<thead>
<tr>
<th>critical</th>
<th>non-critical</th>
</tr>
</thead>
<tbody>
<tr>
<td>Accessibility</td>
<td>Presentation</td>
</tr>
<tr>
<td>Layout</td>
<td>Design</td>
</tr>
<tr>
<td>Usability</td>
<td>Experience</td>
</tr>
</tbody>
</table>
</div>
</li>
</ul>
<ul class="arrow">
<li>
Interesting reading on common CSS3 fallbacks:
<a href="http://coding.smashingmagazine.com/2011/05/03/using-css3-older-browsers-and-common-considerations/">Using CSS3 — Older Browsers And Common Considerations</a>
</li>
</ul>
</section>
<section>
<h2>Progressive enhancement</h2>
<ul>
<li>
For new media (mobile, tablets...) elegant graceful degradation is not always easy
</li>
<li>
Another approach you'll hear is <em>progressive enhancement</em>:
<ul>
<li>code for least supporting browsers first</li>
<li>use CSS3/Javascript to enhance the experience for more capable browsers</li>
<li>'bottom-up' approach</li>
</ul>
</li>
<li>
Can be used together with feature detection:
<ul>
<li>if drag drop supported: add drag drop</li>
<li>if application cache supported: provide offline version</li>
<li>...</li>
</ul>
</li>
<li class="arrow">
nice in theory, but feature detection/injection is time consuming and costly
</li>
</ul>
<div class="tooltip">
<div>
Alas: it is not yet possible to query for network speed, although it makes a great difference if a device is on Wifi or on a mobile network. A tablet on mobile network will be served the full-blown version, while a smartphone on Wifi will get the reduced version. Expectations are that future specifications will be built to address this problem.
</div>
</div>
</section>
<section>
<h2>Responsive Design</h2>
<ul>
<li>
Responsive design = fluid layout + flexible images + <em>media queries</em>:
<pre class="bigger"><code class="language-css">/* will only execulte if screen is 800px wide or smaller */
@media screen and (min-width: 800px) {
.myClass {
background: #ccc;
}
}
</code></pre>
</li>
<li>
Some examples (change browser width):
<ul>
<li><a href="http://bostonglobe.com/">The Boston Globe</a></li>
<li><a href="http://www.fork-cms.com/">Fork CMS</a></li>
<li><a href="http://mediaqueri.es/">mediaqueri.es</a></li>
</ul>
</li>
<li class="arrow">
(apart from some media queries device) independent code; see the presentation about <a href="14_css_responsive.html">Responsive Design</a>
</li>
</ul>
</section>
<section>
<h2>To wrap things up...</h2>
<ul>
<li>
Start using HTML5 today:
<ul class="v-style">
<li>use the HTML5 doctype and syntax</li>
<li>use new elements, provide polyfills if necessary</li>
<li>use HTML5 audio & video, provide Flash fallback if necessary</li>
</ul>
</li>
<li>
Start using new Javascript today:
<ul class="v-style">
<li>create HTML5 games with canvas if you can ignore IE<9 (yes you can)</li>
<li>create amazing 3D experiments with WebGL</li>
<li>enhance your applications with drag-drop, geolocation, notifications...</li>
</ul>
</li>
<li>
Start using CSS3 today:
<ul class="v-style">
<li>improve your design with non-critical enhancement features like shadows, rounded corners, animations...</li>
</ul>
</li>
</ul>
</section>
</section>
<section data-index-title="">
<section>
<h2>References</h2>
<ul>
<li>
Further reading (after finishing all HTML5 presentations):
<ul>
<li>
<a href="http://www.html5rocks.com/en/">http://www.html5rocks.com/en/</a>
</li>
<li>
<a href="http://html5-demos.appspot.com/static/whats-new-with-html5-media/template/index.html#1">http://html5-demos.appspot.com/static/whats-new-with-html5-media/template/index.html#1</a>
</li>
<li>
<a href="http://html5-demos.appspot.com/static/html5-therealbleedingedge/template/index.html#1">http://html5-demos.appspot.com/static/html5-therealbleedingedge/template/index.html#1</a>
</li>
</ul>
</li>
<li>
Some credits:
<ul>
<li>
HTML5 comic by Brad Colbow & Keith Jeremy<br />
<a href="http://coding.smashingmagazine.com/2009/07/29/misunderstanding-markup-xhtml-2-comic-strip/">http://coding.smashingmagazine....xhtml-2-comic-strip/</a>
</li>
<li>
Goldfish blender story<br />
<a href="http://www.crazynews.net/dp/1-167.htm">http://www.crazynews.net/dp/1-167.htm</a>
</li>
<li>
Excellent HTML5 overview<br />
<a href="http://slides.html5rocks.com/">http://slides.html5rocks.com/</a>
</li>
<li>
CSS3 progress report<br />
<a href="http://www.w3.org/Style/CSS/current-work">http://www.w3.org/Style/CSS/current-work</a>
</li>
</ul>
</li>
</ul>
</section>
</section>
<section data-index-title="">
<section>
<h2>Questions?</h2>
</section>
</section>
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