Responsive web design from the future

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WEB DESIGN FROM THE FUTURE RESPONSIVE pushState. replaceState. Hashbangs!# AJAX. PJAX. Beets. Bears. Battlestar Galactica.

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Kyle Neath is...

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~designer @

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@kneath

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warpspire.com

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URL Design Partial Page Updates Let’s talk about

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The future of the web is… HTML5 History API + Smart Partial Page Updates

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The future of the web is… RESPONSIVE

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How do you deﬁne responsive?

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Resize the browser With an iPad / Playbook Responsive Web Design (lol/jk) “ ”

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Fast pageloads Animates naturally Responds instantly Feels Faster™ click touch zoom scroll swipe type resize

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Keyboard Shortcuts Back & Forward Buttons URL Hacking Browser Native

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Technologies

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@media queries Modernizr jQuery.hotKeys CSS3 Animations HTML5 History API XMLHTTPRequest mustache.js

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@media queries Modernizr jQuery.hotKeys CSS3 Animations HTML5 History API XMLHTTPRequest mustache.js TOO MUCH FOR ONE DAY

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… and how GitHub is stumbling through them

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URL Design My recent love affair

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URLs are sexy

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Working with Terminal made me love URLs

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Who needs directions if you can skip to the destination? URLs are like transporters

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Everything should have a URL

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A URL is an agreement

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Can you see a future with hashbangs? #!/defunct

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// Redirect legacy anchor-based issue urls to real URLs. var location_with_hash = location.pathname + location.hash var matches = location_with_hash.match(/#issue\/(\d+)(\/comment\/(\d+))?/) if (matches) { var issue_number = matches[1] var comment_id = matches[3] if (issue_number) { if (comment_id) { window.location = location_with_hash.replace(/\/?#issue\/\d+\/comment\/\d+/ } else { window.location = location_with_hash.replace(/\/?#issue\/\d+/, "/" + issue_ } } } FOREVER

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An should behave like an

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⌘ + click ⇧ + click Middle click

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Be responsive! Browsers have windows & tabs

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e.which == 1 && !e.metaKey && !e.shiftKey

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Feels Faster™ Making people say

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Welcome to the AJAX Generation

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Welcome to the AJAX Generation iPhone Generation

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Fast is about perception

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= 1 billion SQL Queries 2 billion Memcache calls 3 billion Git calls

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SLOW

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Why are we focusing up here? This is the part that changes

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Caching! …is really difﬁcult

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AJAX!

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AJAX! loaders are not responsive

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Only use loaders when requests are slow ~500ms Cache content for zero-request updates Think about the back button

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There will always be full page loads

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Serve all HTML (or JSON) in one request If you want fast…

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Remember, page load time is about perception When can I: scroll, read text, click links?

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Twitter: HTML + CSS + JS API Driven

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Apply Science https://twitter.com/#!/kneath 4.7sec total load time 4.3sec timeline load Time to usable!

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Apply Science https://github.com/kneath 3.4sec total load time 1.1sec HTML/CSS/JS loaded Time to usable!

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Why is Twitter’s so slow?

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SSL

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Each domain is a new SSL Handshake twitter.com api.twitter.com

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Handshakes and Waterfalls SSL twitter.com SSL api.twitter.com HTML, CSS, JS JSON Data

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SSL Negotiation is our bottleneck 40ms backend response time 500ms blocking SSL Negotiation

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Always favor science over theory

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Be Responsive Client-Side Cache AJAX/JSON Request Full Page

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Server or client side template rendering? So if we want partial page updates sometimes, full page updates other times…

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Use the same templates Both! mustache.rb mustache.js Render HTML in AJAX/JSON partials are your friend

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With SSL negotiation, server time is ~free One is simpler than two But…

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URL Design + Feels Faster™

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HTML5 History API makes me all tingly

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pushState replaceState URL Change + back button stack URL Change only

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Partial page updates with real URLs!

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We can design for the back button!

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Browser Support? 5.0 4.0 Yes

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Browser Support? 90% https://github.com

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history.js balupton/history.js

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Javascript redirects If you use hashbangs… two requests instead of one Confusing code paths some routing in server, some in js?

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Some users get a slower experience Cost of History API But isn’t Chrome already faster than IE7?

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Poison your URL structure Committing to nasty JS redirects FOREVER Manual anchor Javascript Cost of Hashbangs

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Futuristic design This stuff is opening up

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State? We can do that

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?milestone=3&sort=created&direction=desc&state=open

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Save URLs in database replaceState on load but only if there aren’t any params already

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Maintain state across pageviews Copy & paste URLs over IM / chat

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Inﬁnite Scroll? We can do that (correctly)

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Facebook Tumblr Twitter Lots of websites are using inﬁnite scroll

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And they’re all broken

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Inﬁnite scroll is only better than pages if you can restore your position

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http://warpspire.com/experiments/history-api

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Happy Unix Enthusiasts Happy Grandmas Happy Developers Good URL Design + History API makes for…

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warpspire.com/talks/responsive