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Angular

#angular

Table of Contents

About1

Chapter 1: Getting started with Angular2

Remarks2

Versions3

Examples5

Installation of Angular using angular-cli6

Prerequisites:6

To setup a new project6

To add to an existing project6

Running The Project Locally6

Generating Components, Directives, Pipes and Services7

Angular "Hello World" Program8

Prerequisites:8

Step 1: Creating a new project9

Step 2: Serving the application10

Step 3: Editing our first Angular component10

Chapter 2: Event Emitter13

Examples13

Catching the event13

Chapter 3: For Loop15

Examples15

NgFor - Markup For Loop15

Chapter 4: Forms16

Examples16

Reactive Forms16

app.module.ts16 app.component.ts16 app.component.html17 validators.ts18

Template Driven Forms18

Template - signup.component.html18

Component - signup.component.ts19

Model - signup-request.model.ts19

App Module - app.module.ts20

App Component - app.component.html20

Chapter 5: Pipes21

Introduction21

Examples21

Custom Pipes21

Multiple custom pipes22

Chapter 6: Routing24

Examples24

Routing with children24

Basic Routing25

Chapter 7: RXJS and Observables28

Examples28

Wait for multiple requests28

Basic Request28

Chapter 8: Sharing data among components29

Introduction29

Remarks29

Examples29

Sending data from parent component to child via shared service29 Send data from parent component to child component via data binding using @Input30 Sending data from child to parent via @Output event emitter31 Sending data asynchronous from parent to child using Observable and Subject32

Credits35

About You can share this PDF with anyone you feel could benefit from it, downloaded the latest version from: angular It is an unofficial and free Angular ebook created for educational purposes. All the content is extracted from Stack Overflow Documentation, which is written by many hardworking individuals at Stack Overflow. It is neither affiliated with Stack Overflow nor official Angular. The content is released under Creative Commons BY-SA, and the list of contributors to each chapter are provided in the credits section at the end of this book. Images may be copyright of their respective owners unless otherwise specified. All trademarks and registered trademarks are the property of their respective company owners. Use the content presented in this book at your own risk; it is not guaranteed to be correct nor accurate, please send your feedback and corrections to info@zzzprojects.com https://riptutorial.com/1

Chapter 1: Getting started with Angular

Remarks

Angular (commonly referred to as "Angular 2+" or "Angular 2") is a TypeScript-based open- source front-end web framework led by the Angular Team at Google and by a community of individuals and corporations to address all of the parts of the developer's workflow while building complex web applications. Angular is a complete rewrite from the same team that built AngularJS. The framework consists of several libraries, some of them core (@angular/core for example) and some optional (@angular/animations). You write Angular applications by composing HTML templates with Angularized markup, writing component classes to manage those templates, adding application logic in services, and boxing components and services in modules. Then you launch the app by bootstrapping the root module. Angular takes over, presenting your application content in a browser and responding to user interactions according to the instructions you've provided. Arguably, the most fundamental part of developing Angular applications are the components. A component is the combination of an HTML template and a component class that controls a portion of the screen. Here is an example of a component that displays a simple string: src/app/app.component.ts Every component begins with a decorator function that takes a metadata object. The metadata object describes how the HTML template and component class work together. The property tells Angular to display the component inside a custom tag in the index.html file. index.html (inside the tag) The template property defines a message inside a header. The message starts with "Hello" https://riptutorial.com/2 and ends with , which is an Angular interpolation binding expression. At runtime, Angular replaces with the value of the component's property. Interpolation binding is one of many Angular features you'll discover in this documentation. In the example, change the component class's property from to and see what happens. This example is written in TypeScript, a superset of JavaScript. Angular uses TypeScript because its types make it easy to support developer productivity with tooling. Additionally, almost all support is for TypeScript and so using plain JavaScript to write your application will be difficult . Writing Angular code in JavaScript is possible, however; this guide explains how. More information on the architecture of Angular can be found here

Versions

VersionRelease Date

5.0.0-beta.1 (Latest)2017-07-27

4.3.22017-07-26

5.0.0-beta.02017-07-19

4.3.12017-07-19

4.3.02017-07-14

4.2.62017-07-08

4.2.52017-06-09

4.2.42017-06-21

4.2.32017-06-16

4.2.22017-06-12

4.2.12017-06-09

4.2.02017-06-08

4.2.0-rc.22017-06-01

4.2.0-rc.12017-05-26

4.2.0-rc.02017-05-19

4.1.32017-05-17

4.1.22017-05-10

https://riptutorial.com/3

VersionRelease Date

4.1.12017-05-04

4.1.02017-04-26

4.1.0-rc.02017-04-21

4.0.32017-04-21

4.0.22017-04-11

4.0.12017-03-29

4.0.02017-03-23

4.0.0-rc.62017-03-23

4.0.0-rc.52017-03-17

4.0.0-rc.42017-03-17

2.4.102017-03-17

4.0.0-rc.32017-03-10

2.4.92017-03-02

4.0.0-rc.22017-03-02

4.0.0-rc.12017-02-24

2.4.82017-02-18

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