HTML5, CSS3, and other fancy buzzwords

HTML5, CSS3 and other fancy buzzwords

Bringing sexy back to the mobile web

Mohammad (Mo) Jangda

[email protected]@vortexmobile.ca

http://digitalize.ca@mjangda

What’s Up?

mailto:[email protected]




http://digitalize.ca


HTML5Move over Jesse James Garret!We've found the new AJAX!

What exactly is an HTML5?• HTML4 all grown up?

• xHTML's way cooler cousin?

• 5 Highly Trained Militant Lemurs? Steve JobsInventor of HTML5

a bit of HTML+

a dash of CSS+

a whole sprinkling of JavaScript

Semantics

Forms

Geolocation

Offline

PresentationStyling

TransformsAnimations

Rich MediaAudioVideoCanvas

The HTML5 Family

Minus some legitimate & illegitimate cousins...

Web Workers

Web Sockets

Storage

So what does HTML5 give us?

Strong SemanticsGood markup is healthy markup.

Richness without cost

Add all the whiz, bang, and fireworks without having to rely on 3rd party libraries and plugins.

Stuff that took images and extra markup and hours to perfect, now available through a CSS property or two.

New levels of interactivity

APIs that help us build more powerful, feature-rich mobile webapps.

Helping bridge the gap between native and web.

What’s it mean for the Mobile Web?

• It's finally growing up

• WebApps are better, smarter, sexier

• WebApps can do more with less

• WebApps can do the same, if not more than Native Apps

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<video src=“movie.mp4” />

<audio src=“sound.wav” />

Simple

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<video width=”320” height=”240” poster=”poster.png”> <source src="video.m4v" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"' /> <source src="video.webm" type='video/webm; codecs="vp8, vorbis"' /> <source src="video.ogv" type='video/ogg; codecs="theora, vorbis"' /> <object>   <p>Download the <a href="video.mp4">video</a></p> </object></video>

Advanced

Desktops have all the fun!Player is customizable and programmatically accessible

through javascript (i.e. play, pause, etc.)

Not the case on mobile devices(iPad excluded)

Most devices offload audio and video playback to their native media players...which is a

good thing

Oh, and support kinda sucks...

YAUFW!(Yet Another Unnecessary Format War)

CSS3 Styling

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<div class="qzForm roundedcornr_box_812460"> <div class="roundedcornr_top_812460"> <div></div> </div> <div class="roundedcornr_content_812460"> Your content goes here! </div> <div class="roundedcornr_bottom_812460"> <div></div> </div></div>

<style> /* Rounded corner for registration tab */ .roundedcornr_box_812460 { background: url(../images/rounded/roundedcornr_812460_tl.png) no-repeat top left; } .roundedcornr_top_812460 { background: url(../images/rounded/roundedcornr_812460_tr.png) no-repeat top right; } .roundedcornr_bottom_812460 { background: url(../images/rounded/roundedcornr_812460_bl.png) no-repeat bottom left; } .roundedcornr_bottom_812460 div { background: url(../images/rounded/roundedcornr_812460_br.png) no-repeat bottom right; } .roundedcornr_content_812460 { background: url(../images/rounded/roundedcornr_812460_r.png) top right repeat-y; }

.roundedcornr_top_812460 div,.roundedcornr_top_812460, .roundedcornr_bottom_812460 div, .roundedcornr_bottom_812460 { width: 100%; height: 15px; font-size: 1px; } .roundedcornr_content_812460, .roundedcornr_bottom_812460 { /*margin-top: -19px;*/ } .roundedcornr_content_812460 { padding: 0 15px; }</style>

Pre-CSS3: Rounded Corners

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CSS3: Rounded Corners

<div class=“rounded”> This is content</div>

<style type=“text/css”> .rounded { border-radius: 5px; border: 1px solid #111; }</style>

Amazing!Yes, we just went from 3 billion lines of code...

...to just under 10.

Rounded corners:border-radius

Drop shadows: box-shadow & text-shadow

Multiple columns:column-count & column-gap

Transparent backgrounds:rgba

Multiple backgrounds

Background gradients

Some of the fancy new properties:

Because CSS3 is not yet a finalized spec, base properties don’t work in

most browsers.

Instead, you have to use the proprietary prefix for each browser.

border-radius

-moz-border-radius (for Fennec / FF)

-o-border-radius (for Opera Mobile)

-webkit-border-radius (in Mobile Safari, Android, webOS, BB6)

-ms-border-radius (in IE Mobile)

CSS3 Selectors

Full of sizzle-y goodness.Well, close enough.

Attribute pattern-matching

starts with[rel^=”awesome”]

ends with[title$=”amazing”]

contains[name*=”super”]

Element matching

nth-childnth-child(odd) nth-child(2) nth-child(2n)

nth-last-childsame as above, except working backwards

not:not(input)

and a whole bunch of others...

CSS3 Transforms

#Box1

Meet Mr. Box.

#Box1

Feelin’ Tipsy, Mr. Box?

#Box1 { transform: rotate(45deg);}

#Box1

Feelin’ Out of Place, Mr. Box?

#Box1 { transform: translate(10px, 10px);}

#Box1

#Box1

Feelin’ (Vertically) Out of Place, Mr. Box?

#Box1 { transform: translateY(10px);}

#Box1

#Box1

Feelin’ (Horizontally) Out of Place, Mr. Box?

#Box1 { transform: translateX(10px);}

#Box1

Feelin’ a little bloated, Mr. Box?

#Box1 { transform: scale(2);}

#Box1

Feelin’ weak, Mr. Box?

#Box1 { transform: scale(0.5);}

#Box1

#Box1

How’s the weather up there, Mr. Box?

#Box1 { transform: scaleY(2);}

Ate too much, Mr. Box?

#Box1 { transform: scaleX(2);}

#Box1

View (a)skew , Mr. Box?

#Box1 { transform: skew(-30deg, 30deg);}

What about those cool 3D transforms in Toy Story?

iPhone-only at this point.(though, possibly BlackBerry 6 as well)

Transform in Z-space using Z properties.

scaleZrotateZ

rotate3DtranslateZ

Are images dead?Unlikely.

CSS3 Transition & Animation

JavaScript animations on mobile devices are painful.

Like first-crush-ditching-you-for-your-best-friend-because-he-has-a-newer-bike painful.

CSS animations are smoother, faster, and require far less code.

And just for kicks, we’ll throw in some hardware acceleration too.

As simple as adding a single property!

transition: 1s;

Whenever a property for the transition-ready element changes, the browser auto-tweens the

element for you!

#container { transition: 1s;}

#container:hover { opacity: 0.4}

Transition Properties

Which properties should be animated?transition-property: color;

default: all

How long should the transition take?transition-duration: 1s;default: 0, which means no animation.

Required!

Should we wait a bit before starting?transition-delay: 0.5s;

default: 0Can be negative. Will start as if pre-animated.

Transition Properties (cont’d)

Which timing curve should we use?transition-timing-function: ease-out;

default: ease

Other values:

linearease-inease-out

ease-in-outcubic-bezier (custom-defined)

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Feeling lazy? Shorthand it.


p { transition: color 1s ease-in 2s;}


p { transition: color 1s ease-in 2s;}

Might change to:

p { transition: color 1s/2s ease-in;}

Want to make everything transition-ready?(though, probably a bad idea)

Want to make everything transition-ready?(though, probably a bad idea)

* { transition: 1s;}

Whenever possible, use classes instead of direct CSS manipulation.

Whenever possible, use classes instead of direct CSS manipulation.

Generally yields better performance.

What about complex animations?

Combine multiple transitions!

Define tween checkpoints and the properties to be changed at each.

Define tween checkpoints and the properties to be changed at each.

#box1.animated { animation-name: goCrazy }

@keyframes goCrazy { 0% { } 33% { left: 200px; } 66% { -webkit-transform: rotate(-90deg); } 100% { -webkit-transform: scale(2); opacity: 0; }}

Animation Properties

Same as beforeanimation-duration: 1s;animation-delay: 0.5s;

animation-timing-function: ease-out;

Which direction should animations run?animation-direction: alternate;

default: normal;

Which direction should animations run?animation-iteration-count: 4;

default: 1;Use infinite for a never-ending loop.

Let’s walk through a simple 3D animation...

#Box2#Box1

Remember Mr. Box?Say Hello to Mrs. Box.

#Box2#Box1

Let’s get animating!

#Box2#Box1

#Box2#Box1

Flip horizontally

#Box2#Box1

Flip horizontally

transform: rotateY(180deg);

#Box2#Box1

#Box2#Box1

#Container

#Box2#Box1

Re-position and wrap

#Container

#Box2#Box1


position: absolute;

#Container

#Box2#Box1


position: absolute;

#Container

position: relative;

#Container

Box 2#Box1

#Container

Box 2#Box1

Enable 3D animation

#Container

Box 2#Box1

Enable 3D animation

#container { transform-style: preserve-3d; transition: transform 1s;}

#Container

Box 2#Box1

#Container

#Box1

Get flippy

#container:hover { transform: rotateY(180deg);}

#Box2

#Container

Box 2#Box1

#container.flipped { transform: rotateY(180deg);}

<div id=”container” onclick=”this.className = ‘flipped’”>...</div>

#container.flipped { transform: rotateY(180deg);}

<div id=”container” onclick=”this.className = ‘flipped’”>...</div>

Because :hover and mobile don’t always get along...

http://www.paulrhayes.com/experiments/cube-3d/index.html





Canvas

Exactly what it sounds A blank slate with which you can do (almost) anything:

- create elements, shapes, lines, images, 3D things, text.- modify them- animate them- etc.

Geolocation

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if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(success, error);} else { alert('Your device doesn\'t support HTML5 geolocation');}

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function success( position ) { alert( 'Latitude: ' + position.coords.latitude ); alert( 'Longitude: ' + position.coords.longitude ); // position exposes other properties as well: // timestamp, accuracy, heading, altitude, etc.}

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function error( error ) { alert( 'Sorry, we could\’nt figure out your location!' ); console.error( 'Error', error.code, error.message ); // error codes: // 1: location permission denied // 2: location fetch failed // 3: timeout // 0: unknown}

Not quite stalker-ish enough for you?

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if(navigator.geolocation) { watch = navigator.geolocation.watchPosition( success ); // Callback triggered whenever position changes // Success callback could add a point to a map // Or refresh a list of nearby locations // Etc.}

// Stop stalkingclearWatch(watch);

Users always have to allow access to their location first.

Stalking Best PracticesAlways provide a fallback!

IP location can suck.

GPSes are awesome, but satellites can have bad days.

Have an [edit location] button AND manual entry

So, what can we do with Location?

Let’s Map It

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<div id="map"> </div> <script src="http://maps.google.com/maps/api/js?sensor=false"></script> <script> function initMap(id) { var mapOptions = { center: new google.maps.LatLng(0, 0), zoom: 15, mapTypeId: google.maps.MapTypeId.ROADMAP }; return new google.maps.Map(document.getElementById(id), mapOptions); } var map = initMap('map'); </script>

Initialize the map

http://maps.google.com/maps/api/js?sensor=false

http://maps.google.com/maps/api/js?sensor=false

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Add User’s Location to the map

<script> function mapPosition(map, lat, lng) { var position = new google.maps.LatLng(lat, lng); markerOptions = { position: position, map: map }; var marker = new google.maps.Marker(markerOptions); map.setCenter(position); return marker; } if(navigator.geolocation) { navigator.geolocation.getCurrentPosition( function( position ) { mapPosition(map,

position.coords.latitude,position.coords.longitude);

}, function( error ) { alert(error.message); } ); } </script>

Let’s Geocode It.

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http://maps.google.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=false

Server-side (need proxy)





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Client-side

new google.maps.Geocoder(); geocoder.geocode( { 'latLng': new google.maps.LatLng(lat, lng) }, function(results, status) { for( var i = 0; i < data.results.length; i++ ) { var result = results[i]; if(result.types[0] == 'locality' && result.types[1] == 'political') { alert('Your city: ' + result.formatted_address); } } } );

Connect with any of the 3 trillion Location-based APIs out there.

Offline

ManifestCache for storing HTML, CSS, JS

required for offline usage.

StorageCache for storing data.

3 flavours:

sessionStoragelocalStorageWeb SQL

(and a few other types being cooked up for the future...)

Pre-loading of content improves speed and prevents repeated roundtrips to server.

Cache heavy or unique data loads that are unlikely to change, e.g. location information, favourites, etc.

Beyond just for "I'm going underground" scenarios.

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<!DOCTYPE HTML><html manifest="offline-manifest">

CACHE MANIFESTindex.htmlhelp.htmlstyle/main.cssimages/logo.pngimages/cupcakes.png

Specify the manifest file

offline-manifest file

sessionStorage.haveMessage = true;

localStorage.messages = [ ‘Hello World’ , ‘Goodbye World’]

Window 1

Window 2

sessionStorage.haveMessage=> truelocalStorage.messages=> [ ‘Hello World’, ‘Goodbye World’ ]

Window 1

Window 2

sessionStorage.haveMessage=> nulllocalStorage.messages=> [ ‘Hello World’, ‘Goodbye World’ ]

Web SQLFull-fledged SQLLite database in the browser!

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// Basic API methods

db = openDatabase( name, version );

db.transaction( callback );

transaction.executeSql( sql, values, success, error );

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// Create database connection// @params: name, version, display name, size in bytes var db = openDatabase('bakery', '1.0', 'My Bakery', 1048576);

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// Create tabledb.transaction(function(trans) { trans.executeSql('CREATE TABLE IF NOT EXISTS Cupcakes (name TEXT, description TEXT)', []);});

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// Add entriesdb.transaction(function(trans) { trans.executeSql('INSERT INTO Cupcakes VALUES (?, ?)', ['Vanilla', 'Good ol vanilla!']); trans.executeSql('INSERT INTO Cupcakes VALUES (?, ?)', ['Chocolate', 'Good ol chocolate!']);});

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// Select entriesdb.transaction(function(trans) { trans.executeSql(‘SELECT * FROM Cupcakes’, [], function(trans, results) { for(var i = 0; i < results.rows.length; i++) { var cupcake = results.rows.item(i); document.getElement('cupcakes').innerHTML += '<li>' + cupcake.name + ':</strong> ' + cucpake.description + '</li>'; } alert('We\'ve got ' + results.rows.length + ' cupcake(s)'); });});

sessionStorage vs.

localStoragevs.

Web SQL

Depends on the specificity and complexity of your use

cases.sessionStorage: CupcakelocalStorage: Slice of cake

Web SQL: Multi-tiered wedding cake

(Though, the last two can vary depending on your views on SQL / noSQL)

Storage in the Wild

Gmail Web SQL databaseRecent messages are pre-fetched. Certain data (labels) is pre-fetched.

Requires force refresh for update.

YouTube localStorageCaches AJAX requests, search history, user actions, etc.

Sundry Cool Stuff #1

window.onhashchange / pushState

Build true event-driven, dyanmic sites with solid back button support and fragement urls.

Sundry Cool Stuff #2

data-attributes

Store data as attributes within DOM Elements.

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<a data-flavour=”chocolate”>Cupcake!</a>

(Accessed via element.dataset.flavour => chocolate)

Use Case: Weather WebApp

Get User Location(geolocation)

Store Favourite Cities(localStorage)

Pre-fetch long-term forecast(Web SQL)

Weather Trends Graphs(Canvas)

Eye Candy(CSS3 transitions / animations)

Video Weather Report(<video>)

Tools of the TradeBecause only nerds build everything from scratch.

jQTouch

SenchaTouch

SproutCore

jQuery Mobile

Numerous other librariesprocessing.js

raphael.jsgeolocation (with fallbacks)

jQuery.animate + CSS3 Animationspersistence.js (with fallback to Gears)

And, one more thing:Enhance

Progressively!

What’s Next?Hardware access?

Notifications?Mind control?

Thank You!Mohammad Jangda

Vortex Mobile

[email protected]@vortexmobile.ca

http://digitalize.ca@mjangda







HTML5, CSS3, and other fancy buzzwords

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