AngularJS Essentials

Recommendations

Info

Chapter 1 Architectural concepts It's been a long time since the famous Model-View-Controller (MVC) pattern started to gain popularity in the software development industry and became one of the legends of the enterprise architecture design. Basically, the model represents the knowledge that the view is responsible for presenting, while the controller mediates the relationship between model and view. However, these concepts are a little bit abstract, and this pattern may have different implementations depending on the language, platform, and purpose of the application. After a lot of discussions about which architectural pattern the framework follows, its authors declared that from now on, AngularJS would adopt Model-View- Whatever (MVW). Regardless of the name, the most important benefit is that the framework provides a clear separation of the concerns between the application layers, providing modularity, flexibility, and testability. In terms of concepts, a typical AngularJS application consists primarily of a view, model, and controller, but there are other important components, such as services, directives, and filters. The view, also called template, is entirely written in HTML, which provides a great opportunity to see web designers and JavaScript developers working side by side. It also takes advantage of the directives mechanism, which is a type of extension of the HTML vocabulary that brings the ability to perform programming language tasks such as iterating over an array or even evaluating an expression conditionally. Behind the view, there is the controller. At first, the controller contains all the business logic implementation used by the view. However, as the application grows, it becomes really important to perform some refactoring activities, such as moving the code from the controller to other components (for example, services) in order to keep the cohesion high. The connection between the view and the controller is done by a shared object called scope. It is located between them and is used to exchange information related to the model. The model is a simple Plain-Old-JavaScript-Object (POJO). It looks very clear and easy to understand, bringing simplicity to the development by not requiring any special syntax to be created. [ 9 ] www.it-ebooks.info
Getting Started with AngularJS The following diagram exhibits the interaction between the AngularJS architecture components: Source: Official documentation (www.angularjs.org) Setting up the framework The configuration process is very simple and in order to set up the framework, we start by importing the angular.js script to our HTML file. After that, we need to create the application module by calling the module function from the Angular's API, with its name and dependencies. With the module already created, we just need to place the ng-app attribute with the module's name inside the html element or any other element that surrounds the application. This attribute is important because it supports the initialization process of the framework that we will study in the later chapters. In the following code, there is an introductory application about a parking lot. At first, we are able to add and also list the parked cars, storing its plate in memory. Throughout the book, we will evolve this parking control application by incorporating each newly studied concept. [ 10 ] www.it-ebooks.info
Page 1 and 2: www.it-ebooks.info
Page 3 and 4: AngularJS Essentials Copyright © 2
Page 5 and 6: About the Author Rodrigo Branas is
Page 7 and 8: About the Reviewers Andrei M. Eichl
Page 11 and 12: Table of Contents The ngIf directiv
Page 13 and 14: Table of Contents Chapter 7: Unit T
Page 15 and 16: Preface Only 2 months later, I laun
Page 17 and 18: Preface A block of code is set as f
Page 19 and 20: Preface Piracy Piracy of copyright
Page 21: Getting Started with AngularJS This
Page 25 and 26: Getting Started with AngularJS
Page 27 and 28: Getting Started with AngularJS app.
Page 31 and 32: Creating Reusable Components with D
Page 67 and 68: Data Handling The following code is
Page 69 and 70: Data Handling Now, the output will
Page 71 and 72: Data Handling The expected result i
Page 73 and 74:
Data Handling Color Entrance
Page 75 and 76:
Data Handling Now, let's introduce
Page 77 and 78:
Data Handling To finish, we can add
Page 79 and 80:
Data Handling The plate must start
Page 81 and 82:
Dependency Injection and Services D
Page 83 and 84:
Dependency Injection and Services $
Page 85 and 86:
Dependency Injection and Services r
Page 87 and 88:
Dependency Injection and Services p
Page 89 and 90:
Dependency Injection and Services I
Page 91 and 92:
Dependency Injection and Services T
Page 93 and 94:
Dependency Injection and Services $
Page 95 and 96:
Dependency Injection and Services }
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Dependency Injection and Services A
Page 103 and 104:
Dependency Injection and Services n
Page 105 and 106:
Dependency Injection and Services {
Page 107 and 108:
Page 109 and 110:
Dependency Injection and Services L
Page 111 and 112:
Dependency Injection and Services r
Page 113 and 114:
Page 115 and 116:
www.it-ebooks.info
Page 117 and 118:
Scope What happens when we change t
Page 119 and 120:
Scope if (newValue == oldValue) ret
Page 121 and 122:
Scope ng-model="username" placehold
Page 123 and 124:
Scope Consider the following code s
Page 125 and 126:
Scope Now, we need to start tickGen
Page 127 and 128:
www.it-ebooks.info
Page 129 and 130:
Modules The UI module The UI module
Page 131 and 132:
Modules }, template: "" + "{{title}
Page 133 and 134:
Modules A major part
Page 135 and 136:
Unit Testing The topics that we'll
Page 137 and 138:
Unit Testing car.entrance = new Dat
Page 139 and 140:
Unit Testing parkingService = _park
Page 141 and 142:
Unit Testing Filters Next, we are g
Page 143 and 144:
Unit Testing Creating the element w
Page 145 and 146:
Unit Testing '' + '' + 'Please info
Page 147 and 148:
Unit Testing $httpBackend.flush();
Page 149 and 150:
Unit Testing var _saveCar = functio
Page 151 and 152:
Unit Testing At the moment, we have
Page 153 and 154:
Unit Testing R
Page 155 and 156:
Unit Testing 'src/parkingCtrl.js',
Page 157 and 158:
www.it-ebooks.info
Page 159 and 160:
Automating the Workflow Installatio
Page 161 and 162:
Automating the Workflow grunt.initC
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Automating the Workflow } }); dist:
Page 169 and 170:
Automating the Workflow } }, lib: {
Page 171 and 172:
Automating the Workflow Cache The r
Page 173 and 174:
directives 129 filters 128 service
Page 175 and 176:
installation, Grunt 146 installatio
Page 177 and 178:
two-way data binding $apply functio
Page 179 and 180:
Dependency Injection with AngularJS
show all

AngularJS Essentials

Create successful ePaper yourself

Delete template?

Save as template?