AngularJS英文入门指南

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"AngularJS英文版 - 一本由Shyam Seshadri和Brad Green编写的编程/JavaScript类书籍，专注于提升使用结构化Web应用的生产力。本书详细介绍了AngularJS框架，适合初学者和有一定经验的开发者。" AngularJS是一个流行的JavaScript框架，由Google开发并维护，用于构建数据驱动的、大型、可维护且高性能的Web应用程序。AngularJS的核心概念是Model-View-Controller（MVC）架构模式，它通过声明式编程帮助开发者构建动态的用户界面。本书《AngularJS: Up and Running》从基础知识开始，解释了为何选择AngularJS，然后逐步深入到高级概念。对于那些JavaScript经验有限的人来说，书中的内容易懂，同时提供的代码仓库也极大地帮助读者理解和实践所学。书中详细涵盖了以下知识点： 1. **基础概念**：介绍AngularJS的基本组件，如模块（Modules）、控制器（Controllers）、指令（Directives）、服务（Services）和表达式（Expressions）。这些组件共同构成了AngularJS应用的基石。 2. **数据绑定**：AngularJS的数据绑定是其核心特性之一，允许双向绑定，使得模型（Model）和视图（View）之间能自动同步数据变化。 3. **依赖注入**（Dependency Injection）：AngularJS的DI系统简化了代码中组件之间的依赖关系，使代码更易于测试和维护。 4. **指令**：AngularJS的自定义DOM操作，可以扩展HTML的功能，创建可重用的UI组件。 5. **路由**（Routing）：学习如何使用AngularJS的路由功能来管理应用程序的不同状态和页面导航。 6. **表单处理**：掌握AngularJS如何处理表单验证和提交，以及与服务器端的交互。 7. **服务**：了解不同类型的内置服务（如$http、$q、$rootScope等），以及如何创建自定义服务。 8. **单元测试**：书中会介绍如何编写和运行AngularJS应用的单元测试，确保代码质量。 9. **性能优化**：讨论了如何提高AngularJS应用的性能，包括延迟加载、指令优化和资源管理。 10. **AngularJS生态系统**：涵盖了诸如Angular Material、Angular Flex Layout等社区维护的库和工具，它们可以增强AngularJS应用的用户体验和开发效率。《AngularJS: Up and Running》是全面学习和掌握AngularJS的宝贵资源，无论你是初学者还是有经验的开发者，都能从中受益，提升在构建现代Web应用方面的技能。如果你的英语水平足够，这本书将是你探索AngularJS世界的理想指南。

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xiv | Introduction

Introducing AngularJS

AngularJS is a superheroic JavaScript MVC framework for the Web. We call it super‐

heroic because AngularJS does so much for us that we only have to focus on our core

application and let AngularJS take care of everything else. It allows us to apply standard,

tried-and-tested software engineering practices traditionally used on the server side in

client-side programming to accelerate frontend development. It provides a consistent

scalable structure that makes it a breeze to develop large, complex applications as part

of a team.

And the best part? It’s all done in pure JavaScript and HTML. No need to learn another

new programming or templating language (though you do have to understand the MVC

and MVVM paradigms of developing applications, which we briefly cover in this book).

And how does it fulfill all these crazy and wonderful, seemingly impossible-to-satisfy

promises?

The AngularJS philosophy is driven by a few key tenets that drive everything from how

to structure your application, to how your applications should be hooked together, to

how to test your application and integrate your code with other libraries. But before we

get into each of these, let’s take a look at why we should even care in the first place.

What Is MVC (Model-View-Controller)?

The core concept behind the AngularJS framework is the MVC architectural pattern.

The Model-View-Controller pattern (or MVVM, which stands for Model-View-

ViewModel, which is quite similar) evolved as a way to separate logical units and con‐

cerns when developing large applications. It gives developers a starting point in deciding

how and where to split responsibilities. The MVC architectural pattern divides an ap‐

plication into three distinct, modular parts:

• The model is the driving force of the application. This is generally the data behind

the application, usually fetched from the server. Any UI with data that the user sees

is derived from the model, or a subset of the model.

• The view is the UI that the user sees and interacts with. It is dynamic, and generated

based on the current model of the application.

• The controller is the business logic and presentation layer, which peforms actions

such as fetching data, and makes decisions such as how to present the model, which

parts of it to display, etc.

Because the controller is responsible for basically deciding which parts of the model to

display in the view, depending on the implementation, it can also be thought of as a

viewmodel, or a presenter.

2 | Chapter 1: Introducing AngularJS

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