Angular 2：构建SEO友好且高性能单页应用指南

ANGULAR2

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[ vii ]

Preface

AngularJS is a JavaScript development framework that makes building web

applications easier. It is used today in large-scale, high-trafc websites that struggle

with underperformance and portability issues, as well as SEO unfriendliness and

complexity at scale. Angular 2 changes these.

It is the modern framework you need to build performant and robust web

applications. Switching to Angular 2 is the quickest way to get to grips with Angular 2,

and it will help you transition into the brave new world of Angular 2.

By the end of the book, you'll be ready to start building quick and efcient Angular 2

applications that take advantage of all the new features on offer.

What this book covers

Chapter 1, Getting started with Angular 2, kicks off our journey into the world of Angular

2. It describes the main reasons behind the design decisions of the framework. We will

look into the two main drivers behind the shape of the framework—the current state of

the Web and the evolution of frontend development.

Chapter 2, The Building Blocks of an Angular 2 Application, gives an overview of the

core concepts introduced by Angular 2. We'll explore how the foundational building

blocks for the development of applications provided by AngularJS 1.x differ from the

ones in the last major version of the framework.

Chapter 3, TypeScript Crash Course, explains that although Angular 2 is language

agnostic, Google's recommendation is to take advantage of the static typing of

TypeScript. In this chapter, you'll learn all the essential syntax you need to develop

Angular 2 applications in TypeScript!

Preface

[ viii ]

Chapter 4, Getting Started with Angular 2 Components and Directives, describes the core

building blocks for developing the user interface of our applications—directives

and components. We will dive into concepts such as view encapsulation, content

projection, inputs and outputs, change detection strategies, and more. We'll discuss

advanced topics such as template references and speeding up our applications using

immutable data.

Chapter 5, Dependency Injection in Angular 2, covers one of the most powerful

features in the framework, which was initially introduced by AngularJS 1.x: its

dependency injection mechanism. It allows us to write more maintainable, testable,

and understandable code. By the end of this chapter, we will know how to dene

the business logic in services and glue them together with the UI through the DI

mechanism. We will also look into some more advanced concepts, such as the

injectors hierarchy, conguring providers, and more.

Chapter 6, Working with the Angular 2 Router and Forms, explores the new module

for managing forms in the process of developing a real-life application. We will

also implement a page that shows the entered through the form data. In the end,

we will glue the individual pages together into an application by using the

component-based router.

Chapter 7, Explaining Pipes and Communicating with RESTful services, dives into the

router and the forms modules in detail. Here, we will explore how we can develop

model-driven forms and dene parameterized and child routes. We will also explain

the HTTP module and see how we can develop pure and impure pipes.

Chapter 8, SEO and Angular 2 in the Real World, explores some advanced topics in the

Angular 2 application development, such as running an application in Web Workers

and server-side rendering. In the second part of the chapter, we will explore tools

that can ease our daily life as developers, such as angular-cli, and angular2-seed,

explain the concept of hot reloading, and more.

What you need for this book

All you need to work through most of the examples in this book is a simple text

editor or an IDE, Node.js, TypeScript installed, Internet access, and a browser. The

examples in the book are tested on Google Chrome 51+ but they should work in all

popular browsers supported by Angular 2.

Each chapter introduces the software requirements for running the provided

snippets.

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Angular 2：构建SEO友好且高性能单页应用指南

Switching to Angular 2

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