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HTML5 OUTLIERS REMY SHARP / @REM

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http://www.flickr.com/photos/12173213@N00/6410825167 I wanted to build apps that worked without the ball ache. Is that so unreasonable?

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'97 Yeah, I used to be thinner :(

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๏JavaScript in the browser ๏Browser came preinstalled ๏Also discovered WSH / .hta ๏Made apps: wallpaper changer http://www.flickr.com/photos/43805896@N00/3657783366/

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๏Data storage ๏Real-time notifications ๏Desktop integration ๏Access to hardware ๏Local "install" ๏Go naked http://www.flickr.com/photos/21966325@N00/537474857/

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caniuse.com

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STUFF YOU SHOULD DO TODAY AKA PROGRESSIVE ENHANCEMENT

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JSON parsing

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Web Storage

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sessionStorage.state = ↵ JSON.stringify(app.state); localStorage.lastLogin; delete localStorage.user;

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http://www.flickr.com/photos/redux/6188900810 "we have to stop advocating localStorage as a great opportunity for storing data as it performs badly" http://rem.io/link/182

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Be sensible. Think: cookie killer. http://flickr.com/photos/41214178@N00/2822774896/

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Events!!! window.addEventListener('storage', sync);

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Web Forms

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/([\w-\.]+)@((?:[\w]+\.)+)([a-z]{2,4})/gi /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA- Valid email anyone?

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(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF \uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d| [\u00A0-\uD7FF\uF900-\uFDCF\uFDF0- \uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF \uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d| [\u00A0-\uD7FF\uF900-\uFDCF\uFDF0- \uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF \uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]| [\u00A0-\uD7FF\uF900-\uFDCF\uFDF0- \uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF \uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]| [\u00A0-\uD7FF\uF900-\uFDCF\uFDF0- \uFFEF])))\.?$/ Valid email anyone?

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Valid email anyone? '@[10.10.10.10] user@[IPv6:2001:db8:1ff::a0b:dbd 0] "much.more\ unusual"@example.com "[email protected]"@exa mple.com "very.(),:;<>[]\".VERY.\"very@\\ \ \"very \".unusual"@strange.example.com 0@a !#$%&'*+-/=?^_`{}|[email protected] "()<>[]:;@,\\\"!#$%&'*+-/=? ^_`{}|\ \ \ \ \ ~\ \ \ \ \ \ \ ? \ \ \ \ \ \ \ \ \ \ \ \ ^_`{}| ~.a"@example.org ""@example.org postbox@com

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Valid email anyone?

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Make use of free validation

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History API

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$('a[href^="/"]').click(function(e) { var target = e.currentTarget; if (!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) { e.preventDefault(); url = target.pathname; navigate(url, { triggered: true }); } }); function navigate(url, data) { history.pushState(data, '', url); } window.onpopstate = function (event) { if (event.state.triggered) { ajaxLoad(location.pathname); } }

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$('a[href^="/"]').click(function(e) { var target = e.currentTarget; if (!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) { e.preventDefault(); url = target.pathname; navigate(url, { triggered: true }); } }); function navigate(url, data) { history.pushState(data, '', url); } window.onpopstate = function (event) { if (event.state.triggered) { ajaxLoad(location.pathname); } } Select all internal links

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$('a[href^="/"]').click(function(e) { var target = e.currentTarget; if (!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) { e.preventDefault(); url = target.pathname; navigate(url, { triggered: true }); } }); function navigate(url, data) { history.pushState(data, '', url); } window.onpopstate = function (event) { if (event.state.triggered) { ajaxLoad(location.pathname); } } If the user only clicked, ignore new tab clicks

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$('a[href^="/"]').click(function(e) { var target = e.currentTarget; if (!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) { e.preventDefault(); url = target.pathname; navigate(url, { triggered: true }); } }); function navigate(url, data) { history.pushState(data, '', url); } window.onpopstate = function (event) { if (event.state.triggered) { ajaxLoad(location.pathname); } } Send the url path to our pushState function

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$('a[href^="/"]').click(function(e) { var target = e.currentTarget; if (!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) { e.preventDefault(); url = target.pathname; navigate(url, { triggered: true }); } }); function navigate(url, data) { history.pushState(data, '', url); } window.onpopstate = function (event) { if (event.state.triggered) { ajaxLoad(location.pathname); } } Update window location and save the state data

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$(document).on('click', 'a[href^="/"]', function(e) { var target = e.currentTarget; if (!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) { e.preventDefault(); url = target.pathname; navigate(url, { triggered: true }); } }); function navigate(url, data) { history.pushState(data, '', url); } window.onpopstate = function (event) { if (event.state.triggered) { ajaxLoad(location.pathname); } } Now when the user navigates to a url, or we manually push a new url (pushState), it fires popstate, and we ajaxLoad new content.

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๏Build non-JS version ๏Detect history.pushState support ๏Progressively enhance ๏Pat yourself on the back

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EventSource

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EventSource ๏ Events emit from server ๏ Read only stream ๏ Simple API ๏ Possible to polyfill (so IE support)

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EventSource ๏Supports connection dropping and resuming with Last-Event-ID ๏Supports bespoke events other than `message` ๏CORS is coming (x-domain SSE)

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var es = new EventSource('/console'); es.onmessage = function (event) { var data = JSON.parse(event.data); execute(data.command); };

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var es = new EventSource('/console'); es.onmessage = function (event) { var data = JSON.parse(event.data); execute(data.command); }; // custom message type es.addEventListener('reload',function() { reloadData(); });

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Dnd / File API for uploads

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"HTML5 drag and drop module is not just a disaster it’s a fucking disaster" http://rem.io/link/228 http://www.flickr.com/photos/redux/4640052438/

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var root = document.documentElement; root.addEventListener('dragover', cancel, false); root.addEventListener('dragend', cancel, false); root.addEventListener('drop', drop, false); function cancel(event) { event.preventDefault(); } function drop(event) { cancel(event); readFiles(event.dataTransfer.files); }

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var root = document.documentElement; root.addEventListener('dragover', cancel, false); root.addEventListener('dragend', cancel, false); root.addEventListener('drop', drop, false); function cancel(event) { event.preventDefault(); } function drop(event) { cancel(event); readFiles(event.dataTransfer.files); }

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var root = document.documentElement; root.addEventListener('dragover', cancel, false); root.addEventListener('dragend', cancel, false); root.addEventListener('drop', drop, false); function cancel(event) { event.preventDefault(); } function drop(event) { cancel(event); readFiles(event.dataTransfer.files); }

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var root = document.documentElement; root.addEventListener('dragover', cancel, false); root.addEventListener('dragend', cancel, false); root.addEventListener('drop', drop, false); function cancel(event) { event.preventDefault(); } function drop(event) { cancel(event); readFiles(event.dataTransfer.files); }

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Step #2 File API http://www.flickr.com/photos/98411817@N00/231524220/

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function readFiles(files) { for (var i = 0; i < files.length; i++) { preview(files[i]); } } function preview(file) { var reader = new FileReader(); reader.onload = function (event) { var image = new Image(); image.src = event.target.result; holder.appendChild(image); }; reader.readAsDataURL(file); }

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function readFiles(files) { for (var i = 0; i < files.length; i++) { preview(files[i]); } } function preview(file) { var reader = new FileReader(); reader.onload = function (event) { var image = new Image(); image.src = event.target.result; holder.appendChild(image); }; reader.readAsDataURL(file); }

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function readFiles(files) { for (var i = 0; i < files.length; i++) { preview(files[i]); } } function preview(file) { var reader = new FileReader(); reader.onload = function (event) { var image = new Image(); image.src = event.target.result; holder.appendChild(image); }; reader.readAsDataURL(file); }

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upload!!!

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var formData = new FormData();

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var formData = new FormData(); for (var i = 0; i < files.length; i++) { formData.append('file', files[i]); }

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var formData = new FormData(); for (var i = 0; i < files.length; i++) { formData.append('file', files[i]); } // now post a new XHR request var xhr = new XMLHttpRequest(); xhr.open('POST', url);

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var formData = new FormData(); for (var i = 0; i < files.length; i++) { formData.append('file', files[i]); } // now post a new XHR request var xhr = new XMLHttpRequest(); xhr.open('POST', url); xhr.upload.onprogress = function (event) { if (event.lengthComputable) { var complete = (event.loaded / event.total ⏎ * 100 | 0); progress.value = complete; } }

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var formData = new FormData(); for (var i = 0; i < files.length; i++) { formData.append('file', files[i]); } // now post a new XHR request var xhr = new XMLHttpRequest(); xhr.open('POST', url); xhr.upload.onprogress = function (event) { if (event.lengthComputable) { var complete = (event.loaded / event.total ⏎ * 100 | 0); progress.value = complete; } } xhr.send(formData);

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TOMORROW http://www.flickr.com/photos/nasamarshall/5654415647

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dataset & classList

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var boss = document.getElementsByClassName('boss-baddie'); if (gotHit) { me.health -= boss.dataset.damage; } else if (hitBaddie) { boss.dataset.health -= 1; if (boss.dataset.health === 0) { boss.classList.add('dead'); } }

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var boss = document.getElementsByClassName('boss-baddie'); if (gotHit) { me.health -= boss.dataset.damage; } else if (hitBaddie) { boss.dataset.health -= 1; if (boss.dataset.health === 0) { boss.classList.add('dead'); } } element.dataset

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var boss = document.getElementsByClassName('boss-baddie'); if (gotHit) { me.health -= boss.dataset.damage; } else if (hitBaddie) { boss.dataset.health -= 1; if (boss.dataset.health === 0) { boss.classList.add('dead'); } } element.classList

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element.classList querySelectorAll == jQuery? +

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http://www.flickr.com/photos/ilmatte81/4052670882/ Fullscreen

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๏ requestAnimationFrame ๏ WebGL ๏ Blobs (with urls) ๏

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SOOOOOOOOOOOOON http://www.flickr.com/photos/altoexyl/3840879992

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REAL-TIME COMMUNICATION

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๏ WebRTC - audio ๏ Web Audio/Audio Data ๏ WebGL ๏ Full Screen

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CHROMELESS http://www.flickr.com/photos/daveynin/4899888908

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๏Not headless ๏Not just fullscreen ๏Sans-chrome ๏Installable ๏Business as usual: HTML, CSS, JS

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Windows: .hta IE7 FTW!!!

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Chrome: app shortcuts http://rem.io/link/185

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Opera Widgets

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Windows 8

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WebRT http://rem.io/link/186 http://rem.io/link/187 navigator.mozApps.install { "version": "1.0", "name": "ABBAInfo",

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.webapp?

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DO NOT UNDERESTIMATE USER EXPERIENCE. GOOD WEB SITES DO NOT AUTOMATICALLY MAKE GOOD APPLICATIONS.

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PARTING THOUGHTS 1. START USING TECHNOLOGY AVAILABLE TO YOU 2. VIABILITY COMES FROM MULTIPLE IMPLEMENTATIONS 3. DEMAND MORE ACCESS TO APIS 4. HTML5 = JAVASCRIPT

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OTHERWISE: ROCK ON. @REM LEFTLOGIC.COM