Working with the DOM and Living to Tell

by Cassian LUP

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@cassilup // tim .js Organizer // 3PG Senior Dev Working with the DOM & Living to Tell

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1990s Henry Ford?

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1990s Browser Wars

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1990s Browser Wars

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1990s Browser Wars Netscape vs. Internet Explorer

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1990s Browser Wars Netscape vs. Internet Explorer JScript vs. Javascript

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DOM Level 0 / HTML 4 1995 Intermediate DOM / DHTML,  ECMAScript 1997 1998 DOM Level 1 / weak browser upgrades 2000 DOM Level 2 / getElementById 1994 W3C 2004 DOM Level 3 / keyboard DOM Level 4 / Draft 2014

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What exactly is the DOM?

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css-tricks.com/dom

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css-tricks.com/dom

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css-tricks.com/dom

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The Document Object Model (DOM) is a platform- and language-neutral interface that will allow programs and scripts to dynamically access and update the content, structure and style of documents. (w3.org/DOM)

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TL; DR The DOM is an API

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wikipedia.org DOM

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wikipedia.org DOM BOM

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• Interact with it (JS, CSS) wikipedia.org

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• Interact with it (JS, CSS) • Nodes (elements) wikipedia.org

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• Interact with it (JS, CSS) • Nodes (elements) • Parents & Children (inheritance) wikipedia.org

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• Interact with it (JS, CSS) • Nodes (elements) • Parents & Children (inheritance) • Events wikipedia.org

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• Interact with it (JS, CSS) • Nodes (elements) • Parents & Children (inheritance) • Events • ≠ HTML (a markup  language that enables  representing a certain   kind of DOM in text.) wikipedia.org

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• Designed for C, C++, JAVA, JavaScript and others.

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• Designed for C, C++, JAVA, JavaScript and others. • "A camel is a horse designed by committee.” (source)

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• Designed for C, C++, JAVA, JavaScript and others. • "A camel is a horse designed by committee.” (source) • Implemented in each browser, differently. (!!)

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• Designed for C, C++, JAVA, JavaScript and others. • "A camel is a horse designed by committee.” (source) • Implemented in each browser, differently. (!!) quirksmode.org

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quirksmode.org

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Headaches! (link) • Getting the Cursor Position • Getting the Size of the Viewport, or Browser Window • IE, background transparent click (and many many many others) • DOM Ready (38-line solution) Solutions? • jQuery, • MooTools, • Prototype, • CSS Resets.

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Whatever it is you want to do, you need to do it with DOM!

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What did I want to do?

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What did I want to do? the quick brown fox jumps over the lazy dog

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What did I want to do? the quick brown fox jumps over the lazy dog

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1. Default Behaviour the quick brown fox jumps over the lazy dog

the quick brown fox jumps over the lazy dog

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2. Add CSS the quick brown fox jumps over the lazy dog

the quick brown fox jumps over the lazy dog

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3. Uppercase & Line Breaks THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

THE QUICK
BROWN
FOX
JUMPS OVER THE
LAZY DOG

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4. Separate Lines THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

THE QUICK

BROWN

FOX

JUMPS OVER THE

LAZY DOG

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5. Calculate Line Width THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

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5. Calculate Line Width THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

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6. Do the Math (Rule of Three, anybody?) THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

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6. Do the Math (Rule of Three, anybody?) THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

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Voilá! THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG

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Voilá! FOOD & BEVERAGE

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Voilá! WORLD WAR II Chrome

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Voilá! WORLD WAR II Firefox

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Voilá! WORLD WAR II I E

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Voilá! WORL D WAR II Voilá!?!? Safari

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Voilá! Voilá!?!?

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WORL D WAR II Safari Tricky Hack

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Tricky Hack WORLD WAR II Safari

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Solution WORL D WAR II Safari WORLD WAR II Chrome Dynamically adjust font-size

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Advantages • OS-agnostic • Infinite font support • Dynamic rendering Disvantages • Performance issues

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Advantages • OS-agnostic • Infinite font support • Dynamic rendering Disvantages • Performance issues - use cookies!

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Optimize TIM.JS ROCKS

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Optimize TIM.J S ROCK S

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Optimize TIM. JS ROC KS

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Optimize TIM.J S ROCK S

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Optimize TIM.JS ROCKS

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cramify . JS

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https://github.com/cassilup/cramify.js Try Fork Contribute cramify . JS

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AngularJS  Don’t touch the DOM!  ReactJS  Virtual DOM. What the Others did. (L.O.S.T. anybody?)