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Responsible
Responsive
&
filament group
Scott Jehl
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filament group
We design engaging sites and
applications that are simple to
use and accessible to all.
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Mitch Hedberg
“An escalator can never
break: it can only become
stairs. ”
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A natural subset of Progressive Enhancement.
Responsive Design
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Delightful and inclusive.
Responsible
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Inclusive Delightful
It works in my
browser.
It feels intuitive.
It allows me to
complete my task
It’s fun to use!
It’s damned fast!
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...and work especially well in newer browsers!
Make it work
everywhere.
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to skin an app.
There are, in fact,
Many ways
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“it depends.”
- Every speaker at this conference.
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Should it be responsive?
• Commonality across experiences
• Developer Skillset
• Time up-front vs. maintenance
• Interest in a challenge
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Make no mistake!
PE, done right, is hard.
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can be rich, without being exclusive.
A proposition:
A layered approach
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Talk = cheap.
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Let’s tear it apart, shall we?
We built something.
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A One-Web Case Study
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Design-velopment Team
@beep
@upstatement
@filamentgroup
@mirandamulligan
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But is it responsible?
Responsive.
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Areas of Responsibility
Accessibility Performance
Usability Sustainability
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Responsive... ble baseline
• “Content” first
• Mobile-first images
• Mobile-friendly layout
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Asset Baseline
• Basic CSS file
• Basic JS file
• Qualified Enhanced CSS file
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Defensive Development = Qualified Upgrades
Experience Divisions
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Basic CSS
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“Basic” = safe defaults
• Tweaks to browser typography
• Horizontal rules
• Text alignment
• Display: Inline / Block
• No complex layout or positioning
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“Basic”
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Enhanced Experience
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The @media qualifier
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Ethan Marcotte
“If you’re awesome,
or you’re Internet Explorer,
you get enhanced.”
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@media-fortified design.
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All in your
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The Concatenator
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Server-side Concatenation
Minify + Gzip
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Enhanced CSS
/* styles for everyone go here.. */
@media all and (min-width: 500px){ .. }
@media all and (min-width: 620px){ .. }
@media all and (min-width: 950px){ .. }
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Inheritance Prevention
@media all and (min-width: 500px)
and (max-width: 700px){
/* styles constrained to 500-700px */
}
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Left
Right
Left
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Display: table + table-cell
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Ems all the way down.
Ems allow for components to adapt
differently in different containers
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• ResponsiveImages.js
• Respond.js
• Modernizr / extensions / HTML5 Shim
• The Boston Globe JS Framework
Basic.js: “just enough”
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Also.
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Responsive Images
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Edge Cases
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Edge Cases
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Respond.js
https://github.com/scottjehl/Respond
Now available as part of
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Also: matchMedia polyfill
window.matchMedia( “only all” );
github.com/paulirish/matchMedia.js
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Globe JS Framework
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The globe, um... global.
globe = {};
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Feature flags from Modernizr
globe.support.touch
globe.support.applicationcache
respond.mediaQueriesSupported
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Internet Explorer Flags
globe.browser.ie6 =
document.documentElement
.className.indexOf( “ie6” ) >= 0;
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Again, with the @media
globe.enhanced =
respond.mediaQueriesSupported
|| globe.browser.ie6
|| globe.browser.ie7
|| globe.browser.ie8;
Conditional-comment driven
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JS Experience Divide
if( !globe.enhanced ){
//last stop for old browsers!
return;
}
else{
//remove Basic CSS
//bring on the enhancements
}
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great browser, too slow.
And one caveat...
No Enhanced JS for BB5
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No JS? That’s okay.
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On removing Basic.css...
head.removeChild( basicCSS );
• Convenient when basic.css does
not easily cascade.
• A convenience that can’t be
guaranteed.
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Enhancing Further
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Loading Assets
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Different for every browser. Highly optimized.
Enhanced page weight
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~ hand-crafted delivery ~
The assets you receive depend on
width, section, features
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Defining Assets to Load
//Arrays of JS and CSS files
globe.jsToLoad = [ “jquery.js” ];
globe.cssToLoad = [];
jQuery is dynamically-loaded too!
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Feature-based Loading
if( globe.support.touch ){
jsToLoad.push( “touchEvents.js” );
}
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Section-specific Loading
if( globe.hasClass( “gallery”, body ) ){
jsToLoad.push( “galleries.js” );
}
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Device Size Decisions
if( window.screen.width > 500 ){
cssToLoad.push( “fonts.css” );
}
screen, not window
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Our width usage rule of thumb:
screen for assets
window for design
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Why Screen, not viewport?
• Fixed per device
• Assets delivered to device’s
potential, not just current state.
• Orientation-change makes resize
relevant again.
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Pack & Load
globe.load.script(
jsToLoad.join(",")
);
globe.load.style(
cssToLoad.join(",")
);
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Again, concat.
“js/file1.js,file2.js,file3.js”
Minify + Gzip
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Responsive Behavior
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Collapsible Sections
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We value all input...
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On the desktop...
photo: flickrich
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...and on the device
Touch & Mouse
Events
Mouse Events
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Normalized Events
• vclick
• vmousedown
• vmouseover
• vmouseup
• vmousecancel
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Click - or - Gesture
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http://filamentgroup.com/lab/jquery_mobile_pagination_plugin/
Drag pagination
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#!hashbang
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Less JS execution, faster page loads
Single-Page Apps
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Great:
history.replaceState
http://example.com/#!foo.html
http://example.com/foo.html
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...in code.
window.addEventListener(
“hashchange”,
function(){
history.replaceState(
{},
document.title,
location.hash.replace("#!","" )
);
}, false );
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Many ways to “Save”
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Hidden Touch Interface
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Even save without JS
Simple Form
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Extends the ability for a site to meet you where you are
PE + offline is possible!
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Accessibility
enhancements
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Keep it accessible
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Keys + WAI ARIA
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pairs with mobile, resolution-independent
audible interface
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One-Web Challenges
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Content Negotiation
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What if we treat them like navigation?
Landing pages are heavy
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Ideal Delivery
In page source
Delivered via Ajax
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Ads.
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Ads are not awesome.
• Third-party, potential for conflicts
• They block content loading
• Potentially overtake page
• Pixel dimensions, contractually
• Filled with document.write
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Best. Line. Ever.
document.write( “.....” );
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Dynamically injected, naturally.
How we “solve” ads:
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Resize + Hide + Append
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Where to append?
CSS:
@media all and (min-width: 500px){
.a .ad { display: none; }
}
JavaScript:
//on window resize:
if( !$( “.ad” ).is( “:visible” ) ){
$( “.ad” ).appendTo( “.b” );
}
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Not an edge-case.
Edge Caching
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In conclusion...
to build sites that are rich without being exclusive.
We have the tools
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What about “apps?”
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FlipPics
http://bit.ly/pBJciO
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@scottjehl
thanks everyone.