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The Web Component Ecosystem A wonderful world of Web Components Rob Dodson Brazil - Aug, 2014

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+RobDodson @rob_dodson

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Agenda Web Components: Overview The ecosystem Join the revolution

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Web Components: Overview

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What problems are we solving?

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!

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http://drbl.in/esYL Building UI tabs should be easy!

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KNOWLEDGE HISTORY FOOD Less markup. Less JS. Less confusion. Web Components

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How do they work?

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36 Browser support Summer 2014

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Layers · sugaring · polymer.js: declarative, data-binding, · property observation, gestures, …) · components · core elements, paper elements · polyfills ·

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Browser support Summer 2014 (with Polymer)

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Browser support Summer 2014 (with Polymer)

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Custom Elements define new HTML/DOM elements

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Tab 1 Tab 2 Tab 3 declarative, readable meaningful HTML common way to extend → reusable Custom Elements define new HTML

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declarative, readable meaningful HTML common way to extend → reusable Custom Elements define new HTML var tabs = document.querySelector('paper-tabs'); tabs.addEventListener('core-activate', function() { console.log(this.selected); });

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document.registerElement(‘paper-tabs’, { prototype: Object.create(HTMLElement.prototype) }); vanilla polymer … usage … // document.createElement(‘paper-tabs’);

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document.registerElement(‘paper-tabs’, { prototype: Object.create(HTMLElement.prototype) }); vanilla polymer … usage … // document.createElement(‘paper-tabs’);

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document.registerElement(‘paper-tabs’, { prototype: Object.create(HTMLElement.prototype) }); vanilla polymer … usage … // document.createElement(‘paper-tabs’);

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document.registerElement(‘paper-tabs’, { prototype: Object.create(HTMLElement.prototype) }); vanilla polymer … usage … // document.createElement(‘paper-tabs’);

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Templates native client-side templating

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Shadow DOM DOM/CSS scoping

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Actually Shadow DOM

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var shadow = el.createShadowRoot(); shadow.innerHTML = “h2 { color: red; }” +
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I’m a profile-card

”; vanilla polymer

I’m a profile-card

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var shadow = el.createShadowRoot(); shadow.innerHTML = “h2 { color: red; }” +
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I’m a profile-card

”; vanilla polymer

I’m a profile-card

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var shadow = el.createShadowRoot(); shadow.innerHTML = “h2 { color: red; }” +
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I’m a profile-card

”; vanilla polymer

I’m a profile-card

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html5rocks.com/en/tutorials/webcomponents/shadowdom

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HTML Imports loading web components

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Custom Elements Create new HTML elements and extend existing ones Templates Native templating in the browser Shadow DOM Scoped CSS!!! + encapsulated markup HTML Imports Load custom element definitions and resources

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The ecosystem

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Elements

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!

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!

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What if we designed HTML for the mobile web?

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http://bit.ly/1jkTo5c core-elements Image:

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Visual Non-visual And many more… Image: http://bit.ly/1kuX889,

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A basic container for controls like tabs or buttons MY APP

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A basic container for controls like tabs or buttons MY APP

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MY APP
A basic container for controls like tabs or buttons MY APP

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MY APP
A basic container for controls like tabs or buttons MY APP

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A simple container with a header section and a content section
MY APP
MY APP

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A simple container with a header section and a content section
MY APP
MY APP

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A simple container with a header section and a content section
MY APP
MY APP

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A simple container with a header section and a content section
MY APP
MY APP

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MY APP
Toolbar will scroll with the page

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A responsive container that combines a left- or right-side drawer panel and a main content area.
Drawer panel...
Main panel...

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Drawer panel...
Main panel...
A responsive container that combines a left- or right-side drawer panel and a main content area.

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Drawer panel...
Main panel...
A responsive container that combines a left- or right-side drawer panel and a main content area.

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Material design

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Preview @ Google I/O

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paper-elements

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A reactive ink effect for indicating touch and mouse actions

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A dynamic shadow for conveying z-depth and spatial relationships

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polymer-project.org/apps/topeka/

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polymer-project.org

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We’re not alone

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Mozilla Brick

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brick-appbar brick-deck brick-tabbar

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core-icon x-instagram (not shown)

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Web Components can work together

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Not just browser makers

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…?

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github.com/mvaldetaro/twbs-grid .bs-col-md-8 .bs-col-md-4

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github.com/erikringsmuth/app-router my-site.com/order/:id !

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github.com/addyosmani/page-er >"> ! var pager = document.querySelector("page-er"); document.addEventListener("polymer-ready", function() { pager.data = model.items; });

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github.com/garstasio/ajax-form Full Name Country City Join newsletter √ Full Name …

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Apps

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polymer-project.org

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chromestatus.com

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polymer-project.org/tools/designer/

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APIs

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APIs (as elements)

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I want to add a marker to a Google map.

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#map { height: 400px; } !
! var marker = null; function getCurrentLocation(callback) { navigator.geolocation.watchPosition(callback); } ! function addMarker(opts, info) { var marker = new google.maps.Marker(opts); ! var infoWindow = new google.maps.InfoWindow({content: info}); ! google.maps.event.addListener(marker, 'click', function() { infoWindow.open(opts.map, marker); }); ! return marker; } ! function mapReady() { var container = document.querySelector('#map'); var map = new google.maps.Map(container, { zoom: 14, disableDefaultUI: true }); getCurrentLocation(function(pos) { var current = new google.maps.LatLng(pos.coords.latitude, pos.coords.longitude); map.setCenter(current); ! // Re-position marker or create new one. if (marker) { marker.setPosition(map.getCenter()); } else { marker = addMarker({ position: current, map: map, title: 'Your location' }, '<b>Your location</b>'); } }); } So much code for one map marker!

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googlewebcomponents.github.io github.com/GoogleWebComponents

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youtube.com/watch?v=eORqFaf_QzM

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github.com/ForceDotComLabs/mobile-ui-elements github.com/ForceDotComLabs

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Join the revolution

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Learn

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polymer-project.org

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Build

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YO ELEMENT npm install -g generator-element

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YO POLYMER npm install -g generator-polymer

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Start with github.com/PolymerLabs/seed-element

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youtube.com/watch?v=2toYLLcoY14

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Share!

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customelements.io

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{ "name": "my-element", "version": "0.0.0", "description": "My awesome Custom Element", "license": "MIT", "keywords": [ "web-components" ], "ignore": [ "**/.*", "node_modules", "bower_components" ] } bower.json

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EXPLORE

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+RobDodson @rob_dodson