Web Components: What, Why, How, When

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@stopsatgreen WEB COMPONENTS What, Why, How, When #FromTheFront, 19/09

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@stopsatgreen @stopsatgreen Peter Gasston broken-links.com

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@stopsatgreen Unless otherwise stated, all photos in this deck are copyright George Lucas or Mickey Mouse or someone and used without permission.

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@stopsatgreen WEB COMPONENTS

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@stopsatgreen ‘Demeaning’ ‘Condescending’ ‘A bit silly’

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen WHAT?

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@stopsatgreen “The component model for the Web.”

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@stopsatgreen A suite of technologies for making reusable UI controls or services.

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@stopsatgreen Fundamental change to the way we build the Web.

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen ® The Lego Group

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@stopsatgreen Custom Elements

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@stopsatgreen Shadow DOM

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@stopsatgreen HTML Imports

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@stopsatgreen

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@stopsatgreen Templates

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@stopsatgreen WHY?

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@stopsatgreen

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@stopsatgreen OOCSS BEM Java Applets Dynamic Drive React Ember jQuery UI Bootstrap Web Components

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@stopsatgreen W3C WHATWG

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@stopsatgreen

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@stopsatgreen • jQuery : querySelector(), classList • Modernizr : @supports • Sass : --custom-properties()

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@stopsatgreen #extendthewebforward http://extensiblewebmanifesto.org/

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@stopsatgreen

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@stopsatgreen http://msdn.microsoft.com/library/ie/ms531426.aspx

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen meaningful naming + modularisation + encapsulation + sharing = web components

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@stopsatgreen HOW?

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@stopsatgreen document.registerElement('indiana-jones');

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@stopsatgreen proto = Object.create(HTMLElement.prototype); proto.whip = function(…); document.registerElement('indiana-jones', indy = document.querySelector('indiana-jones');  indy.whip();

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@stopsatgreen proto = Object.create(HTMLButtonElement.prototype); proto.whip = function(…); document.registerElement('indiana-jones', { prototype: proto, extends: 'button' });

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen var root = foo.createShadowRoot();  root.innerHTML = '

…

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@stopsatgreen   …  … 

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@stopsatgreen

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@stopsatgreen http://leafletjs.com/

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@stopsatgreen

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@stopsatgreen Everything Useful Useful & well-made Crap http://en.wikipedia.org/wiki/Sturgeon%27s_law

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@stopsatgreen http://addyosmani.com/first/

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@stopsatgreen http://www.paciellogroup.com/blog/2014/09/web-components-punch-list/

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen

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@stopsatgreen /path/to/library.min.js  /path/to/a/library.min.js

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@stopsatgreen    

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@stopsatgreen WHEN?

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@stopsatgreen Browser Custom Elements Shadow DOM HTML Imports Template Who knows? ‘Under consideration’ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ http://jonrimmer.github.io/are-we-componentized-yet/

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@stopsatgreen

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Polyfill Polymer Core X-Tags Bosonic Polymer Elements Brick Paper Elements Elements http://www.polymer-project.org/ - http://x-tags.org/ - http://bosonic.github.io/

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@stopsatgreen Web Components are for you to drive the future of the web. Please drive responsibly.

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@stopsatgreen The End.