why open web standards are cool and will save the world. or the web, at least
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Talk by Bruce Lawson at Leeds University 5 May 2011TRANSCRIPT
Why Open Web Standards are cool and will save the world. Or the Web, at least.
Bruce Lawson / Leeds University 5 May 2011
Web Evangelist at Opera
Opera – one browser on many devices
"Our goal is to take the one true Web and make it available to people on their terms."
Jon S. von Tetzchner, Opera Co-founder
"All I ask is access to the full Web, everywhere. And some more beer."
Me
Executive Summary:
Open Web Standards make the Web open for people with disabilities and people without access to the latest expensive hardware.
Executive Summary continued:
Open Web Standards reduce reliance on any single vendor.
Open Web Standards = profit!
Open Standards
Not the same thing as Open SourceMade out in the open
Royalty-freeNot tied to one vendor
The most important program on your computer is your browser
http://www.koreatimes.co.kr/www/news/biz/2010/05/123_52401.html
Legal and General's redesignwww.brucelawson.co.uk/pas78
By-products of the redesign:
● 30% increase in natural search-engine traffic ● 75% reduction in page load time● No more browser-incompatibility problems● Accessible to mobile devices● Time spent to manage content “reduced from 5 days to 0.5 days per job”
No money, no honey etc
● Savings of £200,000 annually on site maintenance ● 90% increase in online sales● 100% return on investment in less than 12 months.
1. new web standards2. adaptive content3. browser as platform
1. new web standards2. adaptive content3. browser as platform
HTML5<!DOCTYPE html>
HTML5 does not replace HTML 4.01
HTML5 has more bling!
HTML5 is umbrella term:markup elements and JavaScript APIs
Webforms – more powerful form elements
standardise commonly-usedrich form elements – without JavaScript
built-in validation(of course you should still validate on the server)
<input type=email><input type=url required>
<input type=range min=10 max=100><input type=date min=2010-01-01 max=2010-12-31>
<input pattern="[0-9][A-Z]{3}" placeholder="9AAA">http://people.opera.com/brucel/demo/html5-forms-demo.html
<canvas> “scriptable images”
<video>
“...extending the language to better support Web applications, since that is one of the directions the Web is going in and is one of the areas least well served by HTML so far. This puts HTML in direct competition with other technologies intended for applications deployed over the Web, in particular Flash and Silverlight.”
Ian Hickson, Editor of HTML5http://lists.w3.org/Archives/Public/public-html/2009Jan/0215.html
<object width="425" height="344"><param name="movie"
value="http://www.example.com/v/9sEI1AUFJKw&hl=en&fs=1&"></param>
<param name="allowFullScreen" value="true"></param>
<param name="allowscriptaccess" value="always"></param>
<embed src="http://www.example.com/v/9sEI1AUFJKw&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>
<video src=pudding.ogv controls autoplay poster=poster.jpg width=320 height=240> <a href=video.ogv>Download movie</a></video>
video as native object...why is it important?
● “play nice” with rest of the page● keyboard accessibility built-in● API for controls
video formats
webM Ogg/ Theora mp4/ h264
Opera yes yes
Chrome yes yes Nope (Chrome.soon)
Firefox Yes (FF4) yes
Safari yes
IE9 Yes (if installed) yes
The politics of codecs
audio formats
mp3 Ogg/ Vobis wav
Opera yes yes
Chrome yes yes
Firefox yes yes
Safari yes yes
IE9 yes yes
1. new web standards2. adaptive content3. browser as platform
Towards a World-Wide Web
1.6 billion people are online, yet more than 4 billion people — two out of every three people on Earth — have a mobile phone or access to one. www.opera.com/smw/2009/10/
China
“The proportion of [people] accessing the Internet by mobile increased enormously from 39.5% in late 2008 to 46% in June 2009, while the proportion of using desktops and laptops decreased”. (close to 150 million people).Statistical Report on Internet Development in China, p25-26, July 2009, www.ccnic.cn
India
There is one bank branch for every 14,000 people, one ATM for every 5000 people but amobile for every 2.3 people in India.
More people in India have access to a mobilephone than even a proper toilet.
“One Web means making, as far as is reasonable, the same information and services available to users irrespective of the device they are using. However, it does not mean that exactly the same information is available in exactly the same representation across all devices.”W3C Mobile Web Best Practices http://www.w3.org/TR/mobile-bp/#OneWeb
CSS 3 Media Queries:
@media screen and (max-device-width: 480px) { // insert CSS rules here
}http://www.w3.org/TR/css3-mediaqueries/
Demonstration of Media Queries
1. new web standards2. adaptive content3. browser as platform
“…the browser run-time is perfect…you’re out of writing for Windows Mobile, Android, S60, each of which require testing...we want to abstract that.
All the cool innovation is happening inside the browser – you don’t need to write to the native operating system anymore.”
Mobile Entertainment Market, June, 2009
W3C Widgets – application development filled with web standards goodness,
using browser engine as platform
Anatomy of a widget
1. new web standards2. adaptive content3. browser as platform
