[Angular 2] 1. QuickStart with Angular2 + TypeScript

This quickstart shows how to write your Angular components in TypeScript. 

To get the benefits of TypeScript, we want to have the type definitions available for the compiler and the editor. TypeScript type definitions are typically published in a repo called DefinitelyTyped. To fetch one of the type definitions to the local directory, we use the tsd package manager.

npm install -g tsd@^0.6.0
tsd install angular2 es6-promise rx rx-lite

 

Run the TypeScript compiler

First to create two files in root,  index.html and app.ts.

npm install -g typescript@^1.5.0-beta
tsc --watch -m commonjs -t es5 --emitDecoratorMetadata app.ts

 

Import Angular

import {Component, View, bootstrap} from 'angular2/angular2';

The above import statement uses ES6 module syntax to import three symbols from the Angular module. The module will load at runtime.

 

Define a component

复制代码
@Component({
    selector: 'my-app' // Defines the <my-app></my-app> tag
})
@View({
    template: '<h1>Hello {{ name }}</h1>' // Defines the inline template for the component
})

class MyAppComponent{
    name: string;

    constructor() {
        this.name = "Allen Greater";
    }
}
复制代码

'@Component' + '@View' + Class -- name + template + controller.

 

Bootstrap

bootstrap(MyAppComponent);

 

Load the component

The last step is to load the module for the my-app component. To do this, we'll use the System library.

复制代码
<html>
<head>
    <title>Angular 2 Quickstart</title>
    <script src="https://github.jspm.io/jmcriffey/bower-traceur-runtime@0.0.87/traceur-runtime.js"></script>
    <script src="https://jspm.io/system@0.16.js"></script>
    <script src="https://code.angularjs.org/2.0.0-alpha.28/angular2.dev.js"></script>
</head>
<body>
<!-- The app component created in app.ts -->
<my-app></my-app>
<script>System.import('app');</script>
</body>
</html>
复制代码

 

Run a local server

npm install -g http-server  # Or sudo npm install -g http-server
http-server                 # Creates a server at localhost:8080

 

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