Yeoman AngularJS and D3 - A solid stack for web apps

transcript

Yeoman,AngularJS and

D3.jsSolid stack for web apps

Created by

Oscar Villarreal @climboid

Suman Paul @sumankpaul

Structure of the courseIntrosDive into YeomanDive into AngularDive into D3.jsProjects throughout all pointsMaster project using all 3 tools

Oscar VillarrealUI LeadJS GeneralistAngularJSD3JSCSSRock climboscarvillareal.com@climboid

Suman PaulUI LeadJS GeneralistAngularJSGruntYeomanCSS

Mexico and India

We are very similar in many ways, especially when it comes toworking hard and being passionate about our teams

We need to bemore productive

We need toachieve utopiafaster & better

How do we achieve a higherlevel of productivity?

The secret sauce is in using the right tools

Using the right tools also means that we have the power to dothings better and more organized with richer interactions

Start with your workflow

"A collection of tools and best practices working in harmonyto make developing for the web even better"Allows you to quickly assemble files and folders along withboilerplate code.Uses grunt for all of its tasksUses Bower for all of the project dependenciesVia the use of generators one can scaffold projects veryquickly

GruntTakes care of minification, compilation (sass, coffeescript), unit

testing etcAutomation

BowerA package manager for the web, mainly front end packaging

management.

GeneratorA way to instantiate convention over configuration

Boilerplate code

Who contributes to Yeoman?Addy Osmani, Hemanth HM and some of the best in the world

How does Yeoman workLive example

Lets install YeomanYou will need Make sure you have git installed as wellIf you use SASS you will need ruby and compassUse for windows installs (courtesy of Suman Paul)

NodeJS

this linknpm install -g yonpm install -g generator-webappnpm install -g generator-angular

What is an MVC frameworkA pattern for your code that separates interaction and view

Where does it come from? (smalltalk)How has it evolved in the front end

DOJO ToolkitJavaScript MVCBackbone.js - Jeremy AshkenasSpine.jsKnockout.js MVVMEmber.js - Yehuda Katz & Tom DaleAngularJS - Misko Hevery

Why choose Angular?

No silver bullet

You can still create a messwith angular...

The key is to learn and understand what Angular is doing toavoid making a mess

Who contributes to Angular?Google

Misko Hevery

Igor Minar

Vojta Jina

Matias Niemela

Brian Ford

The key in angular is alwaysthink about the data, not the

DOM, the DOM will take care ofits self so long as it is data

binded with the corresponding$scope of a given controller

Core concepts of angularthe ng...ng-app="App"ng-view

<!doctype html><html> <head> <meta charset="utf-8"/> </head> <body ng-app="App"> <div class="container" ng-view></div> <script src="components/angular/angular.js"></script> <script src="scripts/app.js"></script> <script src="scripts/controllers/main.js"></script> </body></html>

Core concpets of angularYour main app module

'use strict';

angular.module('App', []) .config(function ($routeProvider) { $routeProvider .when('/', { templateUrl: 'views/main.html', controller: 'MainCtrl' }) .otherwise({ redirectTo: '/' }); });

Core concepts of angularRouter

A router allows you to glue a controller to a view, creates ascope underneath that controller and maintains state within the

$routeProvider .when('/', { templateUrl: 'views/main.html', controller: 'MainCtrl' }) .when('/directory', { templateUrl: 'views/directory.html', controller: 'DirectoryCtrl' }) .otherwise({ redirectTo: '/'});

Core concepts of angularController

Instantiation of a new controller object along with its childscope

'use strict';

angular.module('App')

.controller('MainCtrl', function ($scope) {

$scope.awesomeThings = [

'HTML5 Boilerplate',

'AngularJS',

'Karma'

Core concepts of angularViewng-view

Templates that interpolate scope objects that are part of agiven controller or are inherited prototypically.

<div class="hero-unit"> <h1>'Allo, 'Allo!</h1> <p>You now have</p> <ul> <li ng-repeat="thing in awesomeThings">{{thing}}</li> </ul> <p>installed.</p> <h3>Enjoy coding! - Yeoman</h3></div>

Core concepts of angular$scope

Keeps your logic contained to that controller unless you areusing $rootScope

$scope will allow you to interpolate its properties in a givenview

$scope.hello = "world"

What gets rendered in the ... ?

<div ng-bind="hello">...</div><div>{{hello}}... </div>

Core concepts of angular$scope

angular.module('App') .controller('MainCtrl', function ($scope) { $scope.hello = [ { title:'me',color:'blue',value:2 }, { title:'you',color:'red',value:0 } ]; $scope.btnClicked = function(){ ... }; $scope.falsy = false; });

<ul ng-if="!falsy"> <li ng-repeat="item in hello" ng-click="btnClicked()"> <div ng-bind="item.title"></div> <div>{{item.color}}</div> <input type="number" ng-model="item.value"/> </li></ul>

Core concepts of angularServices

Something that spans multiple controllers and doesn't have aview tied to it.

'use strict';

angular.module('App')

.service('Welcoming', function Calculations() {

return{

sayHello: function(){ return 'hello' },

sayGoodbye: function(){ return 'goodbye' }

Core concepts of angularConstants

Maintained across the entire application. Can be injected as aservice. Use this for constants within your application.

'use strict';

angular.module('App') .constant('Pi', 3.141516);

Core concepts of angularCustom Directives

UI components, charts, visualization... anything that hasspecific html conversion and needs to be part of the given

scope.

'use strict';

angular.module('App') .directive('chart', function () { return { restrict: 'E', controller: function($scope, $element){ ... }, templateUrl: 'my-dialog.html', link: function (scope, element) { scope.name = 'Jeff'; } }; });

Goodies of Angular andYeoman

Karma test runnerngMin for minification / concatenationLive reload...

Lets make an Angular appIf you have Yeoman installed follow the presenter

If you do not have Yeoman installed please clone this repo

What is the canvas?<canvas> "magic" </canvas>

Used to draw graphics, on the fly, via scripting (usually

JavaScript)

Upon clicking you need to find X and Y and compare to

elements inside of canvas

Can be super charged for webGL (context 3d)

If you need a lot of things in your visualization use Canvas

for it will not kill the DOM

Raster

Third party libraries for CanvasKinetic JSFabric JSthree JS

What is SVG?Scalable Vector Graphics, vector image format for 2

dimensional graphics

It is part of the DOM, can be styled using css

Because its part of the DOM one can attach events to it via

JavaScript

Vectors can be scaled and because of that they will look

beautifully on retina displays

Ability to use images as SVG format and even fonts

Third party libraries for SVGD3.js

RaphaelBonsai JS

Why choose D3.jsFull power and control over every single vector drawn

Extremely easy to data bind

Extremely easy to bind events

Its vectors so its works beautifully on all displays

Huge support from community

Who's behind D3.js

many others

Edward Tufte

Mike BostockJason Davies

"I suggest keeping an eye on the work ofBret Victor and Mike Bostock. Both are

cutting edge. Bret Victor visualisesprogramming, sees and thinks beautifully,

just starting to blossom (seeworrydream.com). Mike Bostock (see

bost.ocks.org) developed the open-sourceD3, Data-Driven Documents (d3js.org)."

Structure of a D3 visualizationInclude the librarysvg container <svg> "magic" <svg>Create your scales using the right domain and rangeSome boiler plate for your svg containerCreate SVG itemsData bind the SVG item attributesEnter, update, exit

Mike Bostocksrecommendations

For reusable charts

Things to know about whenusing D3

SVG (elements & attributes)Scales (linear, log, exp, ordinal, ... )Utility functions (max, min, extent, ...)Boilerplate process

Lets create our own

11/16/13 JS-CHANNEL

localhost:8000/#/57 1/1

Some maps maybe?

Code for maps

var width = 960, height = 500;

var projection = d3.geo.albersUsa() .scale(1000) .translate([width / 2, height / 2]);

var path = d3.geo.path() .projection(projection);

var mapContainer = d3.select("#usaMap").append("svg") .attr("width", width) .attr("height", height);

d3.json("/data/output.json", function(error, us) { mapContainer.insert("path", ".graticule") .datum(topojson.feature(us, us.objects.roads)) .attr("class", "land")

Lets create our final repo!Create an angular application using Yeoman

That app should have two routes, main and aboutUs, createthem using the generatorInclude d3 using bower

Insert the d3 code into a directiveInsert the directive into the aboutUs route

Yeoman AngularJS and D3 - A solid stack for web apps

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