Angular JS Notes For Professionals. 100+ pages of professional hints and tricks (GoalKicker.com) (Z-Library)

AngularJS Notes for ProfessionalsAngularJS Notes for Professionals GoalKicker.com Free Programming Books Disclaimer This is an unocial free book created for educational purposes and is not aliated with ocial AngularJS group(s) or company(s). All trademarks and registered trademarks are the property of their respective owners 100+ pages of professional hints and tricks

Contents About 1 ................................................................................................................................................................................... Chapter 1: Getting started with AngularJS 2 ...................................................................................................... Section 1.1: Getting Started 6 ........................................................................................................................................... Section 1.2: Showcasing all common Angular constructs 7 ......................................................................................... Section 1.3: The importance of scope 8 .......................................................................................................................... Section 1.4: Minification in Angular 10 ............................................................................................................................ Section 1.5: AngularJS Getting Started Video Tutorials 11 .......................................................................................... Section 1.6: The Simplest Possible Angular Hello World 11 .......................................................................................... Chapter 2: Modules 13 .................................................................................................................................................... Section 2.1: Modules 13 .................................................................................................................................................... Section 2.2: Modules 13 ................................................................................................................................................... Chapter 3: Components 15 ........................................................................................................................................... Section 3.1: Basic Components and LifeCycle Hooks 15 .............................................................................................. Section 3.2: Components In angular JS 17 .................................................................................................................... Chapter 4: Built-in directives 19 ................................................................................................................................ Section 4.1: Angular expressions - Text vs. Number 19 ................................................................................................ Section 4.2: ngIf 19 ........................................................................................................................................................... Section 4.3: ngCloak 20 .................................................................................................................................................... Section 4.4: ngRepeat 21 ................................................................................................................................................. Section 4.5: Built-In Directives Cheat Sheet 24 .............................................................................................................. Section 4.6: ngInclude 25 ................................................................................................................................................. Section 4.7: ng-model-options 25 ................................................................................................................................... Section 4.8: ngCopy 26 .................................................................................................................................................... Section 4.9: ngPaste 26 .................................................................................................................................................... Section 4.10: ngClick 27 .................................................................................................................................................... Section 4.11: ngList 27 ....................................................................................................................................................... Section 4.12: ngOptions 28 ............................................................................................................................................... Section 4.13: ngSrc 30 ....................................................................................................................................................... Section 4.14: ngModel 30 .................................................................................................................................................. Section 4.15: ngClass 31 ................................................................................................................................................... Section 4.16: ngDblclick 31 ............................................................................................................................................... Section 4.17: ngHref 32 ..................................................................................................................................................... Section 4.18: ngPattern 32 ............................................................................................................................................... Section 4.19: ngShow and ngHide 33 .............................................................................................................................. Section 4.20: ngRequired 34 ........................................................................................................................................... Section 4.21: ngMouseenter and ngMouseleave 34 ...................................................................................................... Section 4.22: ngDisabled 34 ............................................................................................................................................ Section 4.23: ngValue 35 .................................................................................................................................................. Chapter 5: Use of in-built directives 36 ................................................................................................................. Section 5.1: Hide/Show HTML Elements 36 .................................................................................................................... Chapter 6: Custom Directives 37 ............................................................................................................................... Section 6.1: Creating and consuming custom directives 38 ......................................................................................... Section 6.2: Directive Definition Object Template 39 ................................................................................................... Section 6.3: How to create resuable component using directive 40 ........................................................................... Section 6.4: Basic Directive example 42 ......................................................................................................................... Section 6.5: Directive decorator 42 ................................................................................................................................. Section 6.6: Basic directive with template and an isolated scope 43 .........................................................................

Section 6.7: Building a reusable component 44 ............................................................................................................ Section 6.8: Directive inheritance and interoperability 45 ............................................................................................ Chapter 7: How data binding works 47 ................................................................................................................. Section 7.1: Data Binding Example 47 ............................................................................................................................ Chapter 8: Angular Project - Directory Structure 49 ..................................................................................... Section 8.1: Directory Structure 49 .................................................................................................................................. Chapter 9: Filters 51 ........................................................................................................................................................ Section 9.1: Accessing a filtered list from outside an ng-repeat 51 ............................................................................ Section 9.2: Custom filter to remove values 51 ............................................................................................................. Section 9.3: Custom filter to format values 51 .............................................................................................................. Section 9.4: Using filters in a controller or service 52 ................................................................................................... Section 9.5: Performing filter in a child array 52 ........................................................................................................... Chapter 10: Custom filters 54 ...................................................................................................................................... Section 10.1: Use a filter in a controller, a service or a filter 54 .................................................................................... Section 10.2: Create a filter with parameters 54 ........................................................................................................... Section 10.3: Simple filter example 54 ............................................................................................................................ Chapter 11: Constants 56 ............................................................................................................................................... Section 11.1: Create your first constant 56 ...................................................................................................................... Section 11.2: Use cases 56 ................................................................................................................................................ Chapter 12: Custom filters with ES6 58 ................................................................................................................... Section 12.1: FileSize Filter using ES6 58 .......................................................................................................................... Chapter 13: Directives using ngModelController 59 ........................................................................................ Section 13.1: A simple control: rating 59 .......................................................................................................................... Section 13.2: A couple of complex controls: edit a full object 61 ................................................................................. Chapter 14: Controllers 64 ........................................................................................................................................... Section 14.1: Your First Controller 64 ............................................................................................................................... Section 14.2: Creating Controllers, Minification safe 65 ................................................................................................ Section 14.3: Using ControllerAs in Angular JS 66 ......................................................................................................... Section 14.4: Creating Minification-Safe Angular Controllers 67 ................................................................................. Section 14.5: Creating Controllers 68 .............................................................................................................................. Section 14.6: Nested Controllers 68 ................................................................................................................................. Chapter 15: Controllers with ES6 69 ......................................................................................................................... Section 15.1: Controller 69 ................................................................................................................................................ Chapter 16: The Self Or This Variable In A Controller 70 .............................................................................. Section 16.1: Understanding The Purpose Of The Self Variable 70 ............................................................................. Chapter 17: Services 72 .................................................................................................................................................. Section 17.1: Creating a service using angular.factory 72 ............................................................................................ Section 17.2: Dierence between Service and Factory 72 ........................................................................................... Section 17.3: $sce - sanitize and render content and resources in templates 75 ...................................................... Section 17.4: How to create a Service 75 ........................................................................................................................ Section 17.5: How to use a service 76 ............................................................................................................................. Section 17.6: How to create a Service with dependencies using 'array syntax' 76 .................................................... Section 17.7: Registering a Service 77 ............................................................................................................................. Chapter 18: Distinguishing Service vs Factory 78 ............................................................................................. Section 18.1: Factory VS Service once-and-for-all 78 ................................................................................................... Chapter 19: Angular promises with $q service 80 ............................................................................................. Section 19.1: Wrap simple value into a promise using $q.when() 80 ........................................................................... Section 19.2: Using angular promises with $q service 80 .............................................................................................

Section 19.3: Using the $q constructor to create promises 82 ..................................................................................... Section 19.4: Avoid the $q Deferred Anti-Pattern 83 ..................................................................................................... Section 19.5: Using $q.all to handle multiple promises 84 ............................................................................................ Section 19.6: Deferring operations using $q.defer 85 ................................................................................................... Chapter 20: Dependency Injection 86 .................................................................................................................... Section 20.1: Dynamic Injections 86 ................................................................................................................................ Section 20.2: Dynamically load AngularJS service in vanilla JavaScript 86 ............................................................. Chapter 21: Events 87 ...................................................................................................................................................... Section 21.1: Using angular event system 87 ................................................................................................................. Section 21.2: Always deregister $rootScope.$on listeners on the scope $destory event 89 .................................... Section 21.3: Uses and significance 89 ........................................................................................................................... Chapter 22: Sharing Data 92 ....................................................................................................................................... Section 22.1: Using ngStorage to share data 92 ........................................................................................................... Section 22.2: Sharing data from one controller to another using service 92 ............................................................ Chapter 23: Form Validation 94 ................................................................................................................................. Section 23.1: Form and Input States 94 .......................................................................................................................... Section 23.2: CSS Classes 94 ........................................................................................................................................... Section 23.3: Basic Form Validation 94 .......................................................................................................................... Section 23.4: Custom Form Validation 95 ...................................................................................................................... Section 23.5: Async validators 96 ................................................................................................................................... Section 23.6: ngMessages 96 .......................................................................................................................................... Section 23.7: Nested Forms 97 ........................................................................................................................................ Chapter 24: Routing using ngRoute 98 ................................................................................................................. Section 24.1: Basic example 98 ........................................................................................................................................ Section 24.2: Defining custom behavior for individual routes 99 ................................................................................ Section 24.3: Route parameters example 100 .............................................................................................................. Chapter 25: ng-class directive 102 ........................................................................................................................... Section 25.1: Three types of ng-class expressions 102 ................................................................................................ Chapter 26: ng-repeat 104 ........................................................................................................................................... Section 26.1: ng-repeat-start + ng-repeat-end 104 ...................................................................................................... Section 26.2: Iterating over object properties 104 ........................................................................................................ Section 26.3: Tracking and Duplicates 105 .................................................................................................................... Chapter 27: ng-style 106 ............................................................................................................................................... Section 27.1: Use of ng-style 106 .................................................................................................................................... Chapter 28: ng-view 107 ................................................................................................................................................ Section 28.1: Registration navigation 107 ...................................................................................................................... Section 28.2: ng-view 107 ................................................................................................................................................ Chapter 29: AngularJS bindings options (`=`, `@`, `&` etc.) 109 .................................................................. Section 29.1: Bind optional attribute 109 ........................................................................................................................ Section 29.2: @ one-way binding, attribute binding 109 ............................................................................................. Section 29.3: = two-way binding 109 .............................................................................................................................. Section 29.4: & function binding, expression binding 110 ............................................................................................ Section 29.5: Available binding through a simple sample 110 .................................................................................... Chapter 30: Providers 111 ............................................................................................................................................ Section 30.1: Provider 111 ................................................................................................................................................ Section 30.2: Factory 111 ................................................................................................................................................ Section 30.3: Constant 112 .............................................................................................................................................. Section 30.4: Service 112 ................................................................................................................................................. Section 30.5: Value 113 ....................................................................................................................................................

Chapter 31: Decorators 114 .......................................................................................................................................... Section 31.1: Decorate service, factory 114 .................................................................................................................... Section 31.2: Decorate directive 114 ............................................................................................................................... Section 31.3: Decorate filter 115 ...................................................................................................................................... Chapter 32: Print 116 ....................................................................................................................................................... Section 32.1: Print Service 116 ......................................................................................................................................... Chapter 33: ui-router 118 .............................................................................................................................................. Section 33.1: Basic Example 118 ...................................................................................................................................... Section 33.2: Multiple Views 119 ..................................................................................................................................... Section 33.3: Using resolve functions to load data 120 ................................................................................................ Section 33.4: Nested Views / States 121 ........................................................................................................................ Chapter 34: Built-in helper Functions 123 ............................................................................................................ Section 34.1: angular.equals 123 ..................................................................................................................................... Section 34.2: angular.toJson 123 .................................................................................................................................... Section 34.3: angular.copy 124 ....................................................................................................................................... Section 34.4: angular.isString 124 ................................................................................................................................... Section 34.5: angular.isArray 124 ................................................................................................................................... Section 34.6: angular.merge 125 .................................................................................................................................... Section 34.7: angular.isDefined and angular.isUndefined 125 .................................................................................... Section 34.8: angular.isDate 126 ..................................................................................................................................... Section 34.9: angular.noop 126 ....................................................................................................................................... Section 34.10: angular.isElement 126 .............................................................................................................................. Section 34.11: angular.isFunction 127 .............................................................................................................................. Section 34.12: angular.identity 127 ................................................................................................................................. Section 34.13: angular.forEach 128 ................................................................................................................................. Section 34.14: angular.isNumber 128 .............................................................................................................................. Section 34.15: angular.isObject 128 ................................................................................................................................ Section 34.16: angular.fromJson 129 .............................................................................................................................. Chapter 35: digest loop walkthrough 130 ............................................................................................................ Section 35.1: $digest and $watch 130 ............................................................................................................................. Section 35.2: the $scope tree 130 ................................................................................................................................... Section 35.3: two way data binding 131 ........................................................................................................................ Chapter 36: Angular $scopes 133 .............................................................................................................................. Section 36.1: A function available in the entire app 133 ............................................................................................... Section 36.2: Avoid inheriting primitive values 133 ....................................................................................................... Section 36.3: Basic Example of $scope inheritance 134 ............................................................................................... Section 36.4: How can you limit the scope on a directive and why would you do this? 134 .................................... Section 36.5: Using $scope functions 135 ...................................................................................................................... Section 36.6: Creating custom $scope events 136 ....................................................................................................... Chapter 37: Using AngularJS with TypeScript 138 ........................................................................................... Section 37.1: Using Bundling / Minification 138 ............................................................................................................. Section 37.2: Angular Controllers in Typescript 138 ..................................................................................................... Section 37.3: Using the Controller with ControllerAs Syntax 140 ................................................................................ Section 37.4: Why ControllerAs Syntax? 140 ................................................................................................................. Chapter 38: $http request 142 ................................................................................................................................... Section 38.1: Timing of an $http request 142 ................................................................................................................. Section 38.2: Using $http inside a controller 142 .......................................................................................................... Section 38.3: Using $http request in a service 143 ........................................................................................................ Chapter 39: Prepare for Production - Grunt 145 ...............................................................................................

Section 39.1: View preloading 145 ................................................................................................................................... Section 39.2: Script optimisation 146 .............................................................................................................................. Chapter 40: Grunt tasks 148 ....................................................................................................................................... Section 40.1: Run application locally 148 ....................................................................................................................... Chapter 41: Lazy loading 151 ...................................................................................................................................... Section 41.1: Preparing your project for lazy loading 151 ............................................................................................ Section 41.2: Usage 151 ................................................................................................................................................... Section 41.3: Usage with router 151 ................................................................................................................................ Section 41.4: Using dependency injection 152 ............................................................................................................... Section 41.5: Using the directive 152 ............................................................................................................................... Chapter 42: HTTP Interceptor 153 ........................................................................................................................... Section 42.1: Generic httpInterceptor step by step 153 ................................................................................................ Section 42.2: Getting Started 154 ................................................................................................................................... Section 42.3: Flash message on response using http interceptor 154 ....................................................................... Chapter 43: Session storage 156 .............................................................................................................................. Section 43.1: Handling session storage through service using angularjs 156 ............................................................ Chapter 44: Angular MVC 157 .................................................................................................................................... Section 44.1: The Static View with controller 157 .......................................................................................................... Section 44.2: Controller Function Definition 157 ........................................................................................................... Section 44.3: Adding information to the model 157 ..................................................................................................... Chapter 45: SignalR with AngularJS 158 .............................................................................................................. Section 45.1: SignalR and AngularJS [ ChatProject ] 158 ............................................................................................ Chapter 46: Migration to Angular 2+ 162 ............................................................................................................. Section 46.1: Converting your AngularJS app into a componend-oriented structure 162 ....................................... Section 46.2: Introducing Webpack and ES6 modules 164 .......................................................................................... Chapter 47: AngularJS with data filter, pagination etc 165 ....................................................................... Section 47.1: AngularJS display data with filter, pagination 165 ................................................................................. Chapter 48: Profiling and Performance 166 ....................................................................................................... Section 48.1: 7 Simple Performance Improvements 166 .............................................................................................. Section 48.2: Bind Once 169 ............................................................................................................................................ Section 48.3: ng-if vs ng-show 170 ................................................................................................................................. Section 48.4: Watchers 170 ............................................................................................................................................. Section 48.5: Always deregister listeners registered on other scopes other than the current scope 172 .............. Section 48.6: Scope functions and filters 173 ................................................................................................................ Section 48.7: Debounce Your Model 173 ........................................................................................................................ Chapter 49: Performance Profiling 175 ................................................................................................................. Section 49.1: All About Profiling 175 ................................................................................................................................ Chapter 50: Debugging 177 ......................................................................................................................................... Section 50.1: Using ng-inspect chrome extension 177 .................................................................................................. Section 50.2: Getting the Scope of element 179 ........................................................................................................... Section 50.3: Basic debugging in markup 179 .............................................................................................................. Chapter 51: Unit tests 181 ............................................................................................................................................. Section 51.1: Unit test a component (1.5+) 181 ............................................................................................................... Section 51.2: Unit test a filter 181 .................................................................................................................................... Section 51.3: Unit test a service 182 ................................................................................................................................ Section 51.4: Unit test a controller 183 ........................................................................................................................... Section 51.5: Unit test a directive 183 ............................................................................................................................. Chapter 52: AngularJS gotchas and traps 185 ..................................................................................................

Section 52.1: Things to do when using html5Mode 185 ................................................................................................ Section 52.2: Two-way data binding stops working 186 ............................................................................................. Section 52.3: 7 Deadly Sins of AngularJS 187 ............................................................................................................... Credits 191 ............................................................................................................................................................................ You may also like 194 ......................................................................................................................................................

GoalKicker.com – AngularJS Notes for Professionals 1 About Please feel free to share this PDF with anyone for free, latest version of this book can be downloaded from: https://goalkicker.com/AngularJSBook This AngularJS Notes for Professionals book is compiled from Stack Overflow Documentation, the content is written by the beautiful people at Stack Overflow. Text content is released under Creative Commons BY-SA, see credits at the end of this book whom contributed to the various chapters. Images may be copyright of their respective owners unless otherwise specified This is an unofficial free book created for educational purposes and is not affiliated with official AngularJS group(s) or company(s) nor Stack Overflow. All trademarks and registered trademarks are the property of their respective company owners The information presented in this book is not guaranteed to be correct nor accurate, use at your own risk Please send feedback and corrections to web@petercv.com

GoalKicker.com – AngularJS Notes for Professionals 2 Chapter 1: Getting started with AngularJS Version Release Date 1.6.5 2017-07-03 1.6.4 2017-03-31 1.6.3 2017-03-08 1.6.2 2017-02-07 1.5.11 2017-01-13 1.6.1 2016-12-23 1.5.10 2016-12-15 1.6.0 2016-12-08 1.6.0-rc.2 2016-11-24 1.5.9 2016-11-24 1.6.0-rc.1 2016-11-21 1.6.0-rc.0 2016-10-26 1.2.32 2016-10-11 1.4.13 2016-10-10 1.2.31 2016-10-10 1.5.8 2016-07-22 1.2.30 2016-07-21 1.5.7 2016-06-15 1.4.12 2016-06-15 1.5.6 2016-05-27 1.4.11 2016-05-27 1.5.5 2016-04-18 1.5.4 2016-04-14 1.5.3 2016-03-25 1.5.2 2016-03-19 1.4.10 2016-03-16 1.5.1 2016-03-16 1.5.0 2016-02-05 1.5.0-rc.2 2016-01-28 1.4.9 2016-01-21 1.5.0-rc.1 2016-01-16 1.5.0-rc.0 2015-12-09 1.4.8 2015-11-20 1.5.0-beta.2 2015-11-18 1.4.7 2015-09-30 1.3.20 2015-09-30 1.2.29 2015-09-30 1.5.0-beta.1 2015-09-30 1.5.0-beta.0 2015-09-17 1.4.6 2015-09-17 1.3.19 2015-09-17 1.4.5 2015-08-28

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GoalKicker.com – AngularJS Notes for Professionals 4 1.3.0-beta.19 2014-08-23 1.2.22 2014-08-12 1.3.0-beta.18 2014-08-12 1.2.21 2014-07-25 1.3.0-beta.17 2014-07-25 1.3.0-beta.16 2014-07-18 1.2.20 2014-07-11 1.3.0-beta.15 2014-07-11 1.2.19 2014-07-01 1.3.0-beta.14 2014-07-01 1.3.0-beta.13 2014-06-16 1.3.0-beta.12 2014-06-14 1.2.18 2014-06-14 1.3.0-beta.11 2014-06-06 1.2.17 2014-06-06 1.3.0-beta.10 2014-05-24 1.3.0-beta.9 2014-05-17 1.3.0-beta.8 2014-05-09 1.3.0-beta.7 2014-04-26 1.3.0-beta.6 2014-04-22 1.2.16 2014-04-04 1.3.0-beta.5 2014-04-04 1.3.0-beta.4 2014-03-28 1.2.15 2014-03-22 1.3.0-beta.3 2014-03-21 1.3.0-beta.2 2014-03-15 1.3.0-beta.1 2014-03-08 1.2.14 2014-03-01 1.2.13 2014-02-15 1.2.12 2014-02-08 1.2.11 2014-02-03 1.2.10 2014-01-25 1.2.9 2014-01-15 1.2.8 2014-01-10 1.2.7 2014-01-03 1.2.6 2013-12-20 1.2.5 2013-12-13 1.2.4 2013-12-06 1.2.3 2013-11-27 1.2.2 2013-11-22 1.2.1 2013-11-15 1.2.0 2013-11-08 1.2.0-rc.3 2013-10-14 1.2.0-rc.2 2013-09-04 1.0.8 2013-08-22 1.2.0rc1 2013-08-13

GoalKicker.com – AngularJS Notes for Professionals 5 1.0.7 2013-05-22 1.1.5 2013-05-22 1.0.6 2013-04-04 1.1.4 2013-04-04 1.0.5 2013-02-20 1.1.3 2013-02-20 1.0.4 2013-01-23 1.1.2 2013-01-23 1.1.1 2012-11-27 1.0.3 2012-11-27 1.1.0 2012-09-04 1.0.2 2012-09-04 1.0.1 2012-06-25 1.0.0 2012-06-14 v1.0.0rc12 2012-06-12 v1.0.0rc11 2012-06-11 v1.0.0rc10 2012-05-24 v1.0.0rc9 2012-05-15 v1.0.0rc8 2012-05-07 v1.0.0rc7 2012-05-01 v1.0.0rc6 2012-04-21 v1.0.0rc5 2012-04-12 v1.0.0rc4 2012-04-05 v1.0.0rc3 2012-03-30 v1.0.0rc2 2012-03-21 g3-v1.0.0rc1 2012-03-14 g3-v1.0.0-rc2 2012-03-16 1.0.0rc1 2012-03-14 0.10.6 2012-01-17 0.10.5 2011-11-08 0.10.4 2011-10-23 0.10.3 2011-10-14 0.10.2 2011-10-08 0.10.1 2011-09-09 0.10.0 2011-09-02 0.9.19 2011-08-21 0.9.18 2011-07-30 0.9.17 2011-06-30 0.9.16 2011-06-08 0.9.15 2011-04-12 0.9.14 2011-04-01 0.9.13 2011-03-14 0.9.12 2011-03-04 0.9.11 2011-02-09 0.9.10 2011-01-27 0.9.9 2011-01-14

GoalKicker.com – AngularJS Notes for Professionals 6 0.9.7 2010-12-11 0.9.6 2010-12-07 0.9.5 2010-11-25 0.9.4 2010-11-19 0.9.3 2010-11-11 0.9.2 2010-11-03 0.9.1 2010-10-27 0.9.0 2010-10-21 Section 1.1: Getting Started Create a new HTML file and paste the following content: <!DOCTYPE html> <html ng-app> <head> <title>Hello, Angular</title> <script src="https://code.angularjs.org/1.5.8/angular.min.js"></script> </head> <body ng-init="name='World'"> <label>Name</label> <input ng-model="name" /> <span>Hello, {{ name }}!</span> <p ng-bind="name"></p> </body> </html> Live demo When you open the file with a browser, you will see an input field followed by the text Hello, World!. Editing the value in the input will update the text in real-time, without the need to refresh the whole page. Explanation: Load the Angular framework from a Content Delivery Network.1. <script src="https://code.angularjs.org/1.5.8/angular.min.js"></script> Define the HTML document as an Angular application with the ng-app directive2. <html ng-app> Initialize the name variable using ng-init3. <body ng-init=" name = 'World' "> Note that ng-init should be used for demonstrative and testing purposes only. When building an actual application, controllers should initialize the data. Bind data from the model to the view on HTML controls. Bind an <input> to the name property with ng-model4. <input ng-model="name" />

GoalKicker.com – AngularJS Notes for Professionals 7 Display content from the model using double braces {{ }}5. <span>Hello, {{ name }}</span> Another way of binding the name property is using ng-bind instead of handlebars"{{ }}"6. <span ng-bind="name"></span> The last three steps establish the two way data-binding. Changes made to the input update the model, which is reflected in the view. There is a difference between using handlebars and ng-bind. If you use handlebars, you might see the actual Hello, {{name}} as the page loads before the expression is resolved (before the data is loaded) whereas if you use ng-bind, it will only show the data when the name is resolved. As an alternative the directive ng-cloak can be used to prevent handlebars to display before it is compiled. Section 1.2: Showcasing all common Angular constructs The following example shows common AngularJS constructs in one file: <!DOCTYPE html> <html ng-app="myDemoApp"> <head> <style>.started { background: gold; }</style> <script src="https://code.angularjs.org/1.5.8/angular.min.js"></script> <script> function MyDataService() { return { getWorlds: function getWorlds() { return ["this world", "another world"]; } }; } function DemoController(worldsService) { var vm = this; vm.messages = worldsService.getWorlds().map(function(w) { return "Hello, " + w + "!"; }); } function startup($rootScope, $window) { $window.alert("Hello, user! Loading worlds..."); $rootScope.hasStarted = true; } angular.module("myDemoApp", [/* module dependencies go here */]) .service("worldsService", [MyDataService]) .controller("demoController", ["worldsService", DemoController]) .config(function() { console.log('configuring application'); }) .run(["$rootScope", "$window", startup]); </script> </head> <body ng-class="{ 'started': hasStarted }" ng-cloak> <div ng-controller="demoController as vm">

GoalKicker.com – AngularJS Notes for Professionals 8 <ul> <li ng-repeat="msg in vm.messages">{{ msg }}</li> </ul> </div> </body> </html> Every line of the file is explained below: Live Demo ng-app="myDemoApp", the ngApp directive that bootstraps the application and tells angular that a DOM1. element is controlled by a specific angular.module named "myDemoApp"; <script src="angular.min.js"> is the first step in bootstrapping the AngularJS library;2. Three functions (MyDataService, DemoController, and startup) are declared, which are used (and explained) below. angular.module(...) used with an array as the second argument creates a new module. This array is used3. to supply a list of module dependencies. In this example we chain calls on the result of the module(...) function; .service(...) creates an Angular Service and returns the module for chaining;4. .controller(...) creates an Angular Controller and returns the module for chaining;5. .config(...) Use this method to register work which needs to be performed on module loading.6. .run(...) makes sure code is run at startup time and takes an array of items as a parameter. Use this7. method to register work which should be performed when the injector is done loading all modules. the first item is letting Angular know that the startup function requires the built-in $rootScope service to be injected as an argument; the second item is letting Angular know that the startup function requires the built-in $window service to be injected as an argument; the last item in the array, startup, is the actual function to run on startup; ng-class is the ngClass directive to set a dynamic class, and in this example utilizes hasStarted on the8. $rootScope dynamically ng-cloak is a directive to prevent the unrendered Angular html template (e.g. "{{ msg }}") to be briefly9. shown before Angular has fully loaded the application. ng-controller is the directive that asks Angular to instantiate a new controller of specific name to10. orchestrate that part of the DOM; ng-repeat is the directive to make Angular iterate over a collection and clone a DOM template for each item;11. {{ msg }} showcases interpolation: on-the-spot rendering of a part of the scope or controller;12. Section 1.3: The importance of scope As Angular uses HTML to extend a web page and plain Javascript to add logic, it makes it easy to create a web page using ng-app, ng-controller and some built-in directives such as ng-if, ng-repeat, etc. With the new controllerAs syntax, newcomers to Angular users can attach functions and data to their controller instead of using $scope. However, sooner or later, it is important to understand what exactly this $scope thing is. It will keep showing up in

GoalKicker.com – AngularJS Notes for Professionals 9 examples so it is important to have some understanding. The good news is that it is a simple yet powerful concept. When you create the following: <div ng-app="myApp"> <h1>Hello {{ name }}</h1> </div> Where does name live? The answer is that Angular creates a $rootScope object. This is simply a regular Javascript object and so name is a property on the $rootScope object: angular.module("myApp", []) .run(function($rootScope) { $rootScope.name = "World!"; }); And just as with global scope in Javascript, it's usually not such a good idea to add items to the global scope or $rootScope. Of course, most of the time, we create a controller and put our required functionality into that controller. But when we create a controller, Angular does it's magic and creates a $scope object for that controller. This is sometimes referred to as the local scope. So, creating the following controller: <div ng-app="myApp"> <div ng-controller="MyController"> <h1>Hello {{ name }}</h1> </div> </div> would allow the local scope to be accessible via the $scope parameter. angular.module("myApp", []) .controller("MyController", function($scope) { $scope.name = "Mr Local!"; }); A controller without a $scope parameter may simply not need it for some reason. But it is important to realize that, even with controllerAs syntax, the local scope exists. As $scope is a JavaScript object, Angular magically sets it up to prototypically inherit from $rootScope. And as you can imagine, there can be a chain of scopes. For example, you could create a model in a parent controller and attach to it to the parent controller's scope as $scope.model. Then via the prototype chain, a child controller could access that same model locally with $scope.model. None of this is initially evident, as it's just Angular doing its magic in the background. But understanding $scope is an important step in getting to know how Angular works.

GoalKicker.com – AngularJS Notes for Professionals 10 Section 1.4: Minification in Angular What is Minification ? It is the process of removing all unnecessary characters from source code without changing its functionality. Normal Syntax If we use normal angular syntax for writing a controller then after minifiying our files it going to break our functionality. Controller (Before minification) : var app = angular.module('mainApp', []); app.controller('FirstController', function($scope) { $scope.name= 'Hello World !'; }); After using minification tool, It will be minified as like below. var app=angular.module("mainApp",[]);app.controller("FirstController",function(e){e.name= 'Hello World !'}) Here, minification removed unnecessary spaces and the $scope variable from code. So when we use this minified code then its not going to print anything on view. Because $scope is a crucial part between controller and view, which is now replaced by the small 'e' variable. So when you run the application it is going to give Unknown Provider 'e' dependency error. There are two ways of annotating your code with service name information which are minification safe: Inline Annotation Syntax var app = angular.module('mainApp', []); app.controller('FirstController', ['$scope', function($scope) { $scope.message = 'Hello World !'; }]); $inject Property Annotation Syntax FirstController.$inject = ['$scope']; var FirstController = function($scope) { $scope.message = 'Hello World !'; } var app = angular.module('mainApp', []); app.controller('FirstController', FirstController); After minification, this code will be var app=angular.module("mainApp",[]);app.controller("FirstController",["$scope",function(a){a.message=" Hello World !"}]); Here, angular will consider variable 'a' to be treated as $scope, and It will display output as 'Hello World !'.

GoalKicker.com – AngularJS Notes for Professionals 11 Section 1.5: AngularJS Getting Started Video Tutorials There are a lot of good video tutorials for the AngularJS framework on egghead.io https://egghead.io/courses/angularjs-app-from-scratch-getting-started https://egghead.io/courses/angularjs-application-architecture https://egghead.io/courses/angular-material-introduction https://egghead.io/courses/building-an-angular-1-x-ionic-application https://egghead.io/courses/angular-and-webpack-for-modular-applications https://egghead.io/courses/angularjs-authentication-with-jwt https://egghead.io/courses/angularjs-data-modeling https://egghead.io/courses/angular-automation-with-gulp https://egghead.io/courses/learn-protractor-testing-for-angularjs https://egghead.io/courses/ionic-quickstart-for-windows https://egghead.io/courses/build-angular-1-x-apps-with-redux https://egghead.io/courses/using-angular-2-patterns-in-angular-1-x-apps Section 1.6: The Simplest Possible Angular Hello World Angular 1 is at heart a DOM compiler. We can pass it HTML, either as a template or just as a regular web page, and then have it compile an app. We can tell Angular to treat a region of the page as an expression using the {{ }} handlebars style syntax. Anything between the curly braces will be compiled, like so: {{ 'Hello' + 'World' }} This will output: HelloWorld ng-app

GoalKicker.com – AngularJS Notes for Professionals 12 We tell Angular which portion of our DOM to treat as the master template using the ng-app directive. A directive is a custom attribute or element that the Angular template compiler knows how to deal with. Let's add an ng-app directive now: <html> <head> <script src="/angular.js"></script> </head> <body ng-app> {{ 'Hello' + 'World' }} </body> </html> I've now told the body element to be the root template. Anything in it will be compiled. Directives Directives are compiler directives. They extend the capabilities of the Angular DOM compiler. This is why Misko, the creator of Angular, describes Angular as: "What a web browser would have been had it been built for web applications. We literally create new HTML attributes and elements, and have Angular compile them into an app. ng-app is a directive that simply turns on the compiler. Other directives include: ng-click, which adds a click handler, ng-hide, which conditionally hides an element, and <form>, which adds additional behaviour to a standard HTML form element. Angular comes with around 100 built-in directives which allow you to accomplish most common tasks. We can also write our own, and these will be treated in the same way as the built in directives. We build an Angular app out of a series of directives, wired together with HTML.

GoalKicker.com – AngularJS Notes for Professionals 13 Chapter 2: Modules Section 2.1: Modules Module serves as a container of different parts of your app such as controllers, services, filters, directives, etc. Modules can be referenced by other modules through Angular's dependency injection mechanism. Creating a module: angular .module('app', []); Array [] passed in above example is the list of modules app depends on, if there are no dependencies then we pass Empty Array i.e. []. Injecting a module as a dependency of another module: angular.module('app', [ 'app.auth', 'app.dashboard' ]); Referencing a module: angular .module('app'); Section 2.2: Modules Module is a container for various parts of your applications - controller, services, filters, directive, etc. Why to use Modules Most applications have a main method that instantiates and wires together the different parts of the application. Angular apps don't have main method. But in AngularJS the declarative process is easy to understand and one can package code as reusable modules. Modules can be loaded in any order because modules delay execution. declare a module var app = angular.module('myApp', []); // Empty array is list of modules myApp is depends on. // if there are any required dependancies, // then you can add in module, Like ['ngAnimate'] app.controller('myController', function() { // write your business logic here }); Module Loading and Dependencies Configuration Blocks: get executed during provider and configuration phase.1. angular.module('myModule', []).