Repaso rápido a los nuevos estándares web

REPASO RÁPIDO A LOS NUEVOS ESTÁNDARES WEB HTML5, CSS3 y las nuevas API de JavaScript Pablo Garaizar Sagarminaga BilboStack, 2012 Universidad de Deusto, Bilbao

Source: David P. Heitmeyer, CSCI E-12 (Spring 2011), Harvard University

TimedCanvas Web media2D API playback Storage MIME typeand protocol Document handler Microdata editing registration Cross-Browser Drag document history messaging & drop

WebGeolocation SQL File API DatabaseWebGL SVG CSS3 Web Web WebRTC Workers sockets

JSHTML5 CSS3 APIs

Novedades

En el marcado...

http://www.w3.org/TR/html5-diff/

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><!DOCTYPE html> Declaración simplificada

Nueva estructura de documento

<time><time datetime="2011-03-17T17:59:37+01:00" pubdate> March 17, 2011 5:37pm GMT+1</time><mark><p>This is <m>really important</m> to understand HTML5</p> Etiquetas semánticas

<meter><p>G-force is<meter value="9.2" min="0" max="19.6" low="9.5"high="10.3" optimum="9.8">9.2</meter>.</p><progress><p>Downloaded: <progress value="1534602" max="4603807">33%</progress></p> Etiquetas semánticas

<audio><audio src="music.mp3" autoplay loop="3" controls preload /><video><video width="320" height="240" controls> <source src="pr6.mp4" type=video/mp4; codecs="avc1.42E01E, mp4a.40.2"> <source src="pr6.webm" type=video/webm; codecs="vp8, vorbis"> <source src="pr6.ogv" type=video/ogg; codecs="theora, vorbis"></video> Multimedia

<canvas><canvas id=”area” width=”320” height=”240”></canvas><script>function draw() { var area = document.getElementById("area"); var ctx = area.getContext("2d"); ctx.fillRect(50, 25, 150, 100);}</script>Se pueden hacer muchas cosas: rectángulos, círculos, elipses, caminos, texto,imágenes, gradientes, transformaciones. Canvas

<input><input type="search" search box type="number" spinbox type="range" slider type="color" color picker type="tel" telephone number type="url" web address type="email" email address type="date|time|month|week|datetime" required autofocus placeholder=”Type here...”/> Formularios

<datalist><input type=”text” list="cars" /><datalist id="cars"> <option value="BMW"> <option value="Ford"> <option value="Volvo"></datalist><keygen><form action="signup.asp" method="post"> user: <input type="text" name="username" /> encryption: <keygen name="security" /> <input type="submit" /></form> Formularios

<menu> + <command><menu> <command onclick="alert(first!)" label="Do 1st Command"/> <command onclick="alert(second!)" label="Do 2nd Command"/> <command onclick="alert(third!)" label="Do 3rd Command"/></menu><datagrid><datagrid> <table ...></datagrid> Etiquetas interactivas

<details>Dive into HTML5<details open> <legend>Pilgrim, M. (2011)</legend> <p> Mark Pilgrim, Dive into HTML5, <a href=”http://diveintohtml5.org”>updated!</a>. </p></details> Etiquetas interactivas

<figure> +<figcaption><figure> <img src=”fig1.jpg” title=”Graphic” /> <figcaption>Figure 1. Overall scores.</figcaption></figure><wbr><p>You can break the line here<wbr> or here<wbr>, or even here<wbr>.</p> Otras etiquetas

En CSS3...

E[att^="val"]E[att$="val"]E[att*="val"] E:emptyE:root E:targetE:nth-child(n) E:enabledE:nth-last-child(n) E:disabledE:nth-of-type(n) E:checkedE:nth-last-of-type(n) E:selectionE:last-child E:not(selector)E:first-of-type E ~ FE:last-of-typeE:only-childE:only-of-type Nuevos selectoreshttp://www.456bereastreet.com/archive/200601/css_3_selectors_explained/

#skew { transform:skew(35deg);}#scale { transform:scale(1,0.5);}#rotate { transform:rotate(45deg);}#translate { transform:translate(10px, 20px);}#rotate-skew-scale-translate { transform:skew(30deg) scale(1.1,1.1) rotate(40deg) translate(10px, 20px);} Transformaciones http://dev.w3.org/csswg/css3-transforms/

div { transition-property: opacity; transition-delay: 0.5s; transition-duration: 2s; transition-timing-function: linear; opacity: 30%;}div:hover { opacity: 100%;} Transiciones http://www.w3.org/TR/css3-transitions/

div { animation-name: diagonal-slide; animation-duration: 5s; animation-iteration-count: 10;}@keyframes diagonal-slide { 0% { left: 0; top: 0; } 100% { left: 100px; top: 100px; }} Animaciones http://www.w3.org/TR/css3-animations/

@font-face { font-family: <a-remote-font-name>; src: <source> [,<source>]*; [font-weight: <weight>]; [font-style: <style>];}@font-face { font-family: "Bitstream Vera Serif Bold"; src: url("http://server.com/VeraSeBd.ttf");}body { font-family: "Bitstream Vera Serif Bold", serif } @font-face http://www.font-face.com

div { webkit-transition: opacity 2s linear; moz-transition: opacity 2s linear; ms-transition: opacity 2s linear; o-transition: opacity 2s linear; transition: opacity 2s linear;} El infierno de los prefijos http://www.sitepoint.com/opera-css3-webkit-prefix

En JavaScript...

function get_location() { navigator.geolocation.getCurrentPosition(show_location);}function show_location(position) { var latitude = position.coords.latitude; var longitude = position.coords.longitude; alert(You are here: (+latitude+,+longitude+));} Geolocalización

function show_status() { var status = navigator.onLine ? Online : Offline; alert(You are +status);}Eventos nuevos: window.ononline window.onoffline Offline / online

var foo = localStorage.getItem("bar");// ...localStorage.setItem("bar", foo);var foo = localStorage["bar"];// ...localStorage["bar"] = foo;Algunos navegadores soportan Web SQL Database (WebDB), pero no estáestandarizado. Local Storage

history.pushState(json, title, url);addEvent(window, popstate, function (event) { var data = event.state; //...}); Web History

Timing control for script-based animations (RequestAnimationFrame) Web Audio API / Fullscreen API Audio Data API getUserMedia()Pointer Lock API WebRTC Timed track API (WebVTT, WebSRT) Server-Sent Events (EventSource)

Audio Data API + WebGL = insane http://videos.mozilla.org/serv/blizzard/audio-slideshow

Y nueva sintaxis...

http://espadrine.github.com/New-In-A-Spec/es6/

Todo esto, ¿para cuándo?

En teoría, HTML5 no será un estándar hasta 2022

¿Qué hacemos hasta entonces?

Polyfillshttps://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills

Para saber más...

W3Chttp://dev.w3.org/html5/spec/Overview.html

WHATWGhttp://whatwg.org/html

Dive into HTML5 http://diveintohtml5.org/

HTML5 Rockshttp://www.html5rocks.com

Improving the Performance of your HTML5 App http://www.html5rocks.com/tutorials/speed/html5/

HTML 5 Demos and Examples http://html5demos.com

Muchas gracias ;-)

Referencias● Dive into HTML5.● W3Schools.● IBM developer networks.● Quackit.● HTML5 Rocks.● HTML5 Demos and Examples.

All images are property of their own owners*, content is licensed under aCreative Commons by-sa 3.0 license* W3C, WHATWG, Dive into HTML5, HTML5 Rocks, Modernizr, FindmebyIP, Troll.me, Memegenerator.net

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