HTML5

Report
HTML5 and Designing a Rich
Internet Experience
Garth Colasurdo
HSLIC Web and Applications Group
gcolasurdo@salud.unm.edu
In This Presentation
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HTML5 ≈ HTML 5 + CSS 3 + JavaScript
Rich Internet Applications (RIA)
HTML5 x 5
Caution and Progress
Example and Reference Sites
HTML5 ≈ HTML 5 + CSS 3 + JavaScript
• HTML5 is a suite of tools for:
– Markup (HTML 5)
– Presentation (CSS 3)
– Interaction (DOM, Ajax, APIs)
• Brought on by the evolving use of the web
http://slides.html5rocks.com/
A Rough History of Web Standards
91-92
93-94
HTML 1
HTML 2
95-96
97-98
99-00
HTML 4
XHTML
1
CSS 1
CSS 2
JS
ECMA,
DOM
01-02
05-06
07-08
09-10
11-12
13-14
HTML 5
T-less D
DOM 2
03-04
Web 2.0
CSS3
Ajax
HTML 5
DOM,
APIs
CSS
2004
WHATWG started
1996 – CSS 1
W3C Rec
2008
W3C Working Draft
1998 – CSS 2
W3C Rec
2012 (2010)
W3C Candidate Rec
1999 – CSS 3
Proposed
2022
W3C Rec
2005 – CSS 2.1
W3C Candidate Rec
2001 – CSS 3
W3C Working Draft
Rich Internet Applications (RIA)
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Space between the internet and the desktop
Apps that look good and behave well
Adobe Air/Flash, Java, Silverlight, Gears
Availability
– Anywhere a web browser is available
– As a desktop widget or application
– Part of a mobile application store
RIA Examples
5 HTML Enhancements
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HTML
Forms
CSS
Offline applications
Local storage
HTML Extended
• Document Flow: div, section, article, nav,
aside, header, footer
• Audio, Video and Embed
• Canvas: paths, gradients, image manipulation,
events
• Microdata for semantics and enhanced search
engine results (Google Rich Snippets)
HTML
Header
Figure
Navigation
Section
Article
Footer
Article
Aside
Image, Video, Quote, Table,
etc…
Footer
Article
Footer
Legend
Footer
Canvas
<canvas id=“canvas” width=“150” height=“150”>
</canvas>
function draw() {
var canvas = document.getElementById(“canvas”);
if (canvas.getContext) {
var ctx = canvas.getContext(“2d”);
ctx.fillStyle = “rgb(200,0,0)”;
ctx.fillRect (10,10,55,50);
ctx.fillStyle = “rgb(0,0,200)”;
ctx.fillRect (30,30,55,50);
}
}
Form Enhancements
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Placeholder text
Specific text input: email, URL, number, search
Slider
Date picker
User Agent validation
CSS Effects
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Rounded corners
Gradients
Box and text shadows
Fonts
Transparencies
Multiple background images and border images
Multiple columns and grid layout
Box sizing
Stroke and outlines
Animation, movement and rotation
Improved selectors
CSS Effect Example
.amazing {
border: 1px solid blue;
color: red;
background-color: gold;
Amazing CSS
Effects
-webkit-border-radius: 40px;
-moz-border-radius: 40px;
border-radius: 40px;
-webkit-box-shadow: 8px 8px 6px
#474747;
-moz-box-shadow: 8px 8px 6px
#474747;
box-shadow: 8px 8px 6px #474747;
text-shadow: 8px 8px 2px #595959;
filter: dropshadow(color=#595959,
offx=8, offy=8);
}
http://css3generator.com/
CSS Timelines
http://mattbango.com/notebook/web-development/pure-css-timeline/
Programmer Tools
• Offline Applications
• Storage
• Communication
– Web Workers
– Web Sockets
• Desktop experience
– Drag and Drop
– Notifications
• Geolocation
Offline Applications
<html mainfest=“http://m.health.unm.edu/someapp.manifest”>
…
</html>
someapp.manifest
CACHE MANIFEST
#v1.01
#Explicitly cached files
CACHE:
index.html
Stylesheet.css
Images/logo.png
NETWORK:
Search.cfm
Login.cfm
/dynamicpages
FALLBACK:
/dynamicpage.cfm /static.html
http://www.whatwg.org/specs/web-apps/current-work/multipage/offline.html
Local Storage
• Beyond cookies- local storage
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Manipulated by JavaScript
Persistent
5MB storage per “origin”
Secure (no communication out of the browser)
• Session storage
– Lasts as long as the browser is open
– Each page and tab is a new session
• Browser based SQLite or IndexedDB
Local Storage
• Web storage
window.localStorage[‘value’] = ‘Save this!’;
• Session storage
sessionStorage.useLater(‘fullname’, ‘Garth Colasurdo’);
alert(“Hello ” + sessionStorage.fullname);
• Database storage
var database = openDatabase(“Database Name”, “Database Version”);
database.executeSql(“SELECT * FROM test”, function(result1) {
…
});
http://dev.w3.org/html5/webstorage/
User Agent Storage
Cautions
• Browser implementation is fragmented
• Standards are in development
– HTML Candidate Recommendation is
scheduled for 2012
– CSS3 is in multiple drafts and proposals
– ECMA-262 (edition 3) (or JavaScript 1.5)
• New markup and architecture design
Progress
• Multiple support levels
– HTML editors
– CSS editors and frameworks
– JavaScript libraries and frameworks
• Astounding user agent development
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JavaScript engines
Rendering engines
Device awareness
Widget adoption
Robust vendor competition and cooperation
• Continue with progressive enhancement/graceful failure
methods
Advocacy Sites
• Total clearing house of HTML5
(start with the presentation)
http://html5rocks.com
• HTML5 Watch is a list of interesting RIA
advances
http://html5watch.tumblr.com
• CSS3 Blog
http://www.css3.info
Demos and Experiments
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Chrome Experiments
http://www.chromeexperiments.com
Apple HTML5 Showcase
http://www.apple.com/html5/
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Canvas Demos
http://www.canvasdemos.com
RIA Demos with browser support listed
http://html5demos.com
Our Solar System
http://neography.com/experiment/circles/solarsystem/
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Pure CSS3 Animated AT-AT Walker from Star Wars
http://blog.optimum7.com/anthony/website-design/pure-css3-animated-at-atwalker-from-star-wars-2.html
Developer Reference Sites
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W3C
http://dev.w3.org/html5/html-author/
http://w3.org/TR/css3-roadmap/
W3Schools HTML 5 Reference
http://www.w3schools.com/html5/
Dive Into HTML 5 (prerelease site for an O’Reilly book)
http://diveintohtml5.org
WebKit (Safari and Chromium)
http://developer.apple.com/safari/library/navigation/
http://www.chromium/home/
Mozilla
http://developer.mozilla.org/en/html/html5/
IE 8 & 9
http://msdn.microsoft.com/en-us/library/aa737439.aspx
http://ie.microsoft.com/testdrive/

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