利用VS Code开发你的第一个AngularJS 2应用程序

2019-11-19 14:43:38

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前言

之前已经给大家介绍了Angular2开发环境搭建教程之VS Code，本文将详细介绍利用VS Code如何开发AngularJS2应用程序的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。

运行环境：

1、Windows 10

2、Node 6.7.0

3、npm 3.10.8

4、TypeScript 2.0.3

创建项目

1、创建文件夹：angular2-quickstart，启动VS Code，打开刚创建的文件夹：angular2-quickstart。

2、在根文件夹（angular2-quickstart）下，创建package.json文件：

{ "name": "angular-quickstart", "version": "1.0.0", "scripts": { "start": "tsc && concurrently /"tsc -w/" /"lite-server/" ", "lite": "lite-server", "postinstall": "typings install", "tsc": "tsc", "tsc:w": "tsc -w", "typings": "typings" }, "license": "ISC", "dependencies": { "@angular/common": "~2.0.2", "@angular/compiler": "~2.0.2", "@angular/core": "~2.0.2", "@angular/forms": "~2.0.2", "@angular/http": "~2.0.2", "@angular/platform-browser": "~2.0.2", "@angular/platform-browser-dynamic": "~2.0.2", "@angular/router": "~3.0.2", "@angular/upgrade": "~2.0.2", "angular-in-memory-web-api": "~0.1.5", "bootstrap": "^3.3.7", "core-js": "^2.4.1", "reflect-metadata": "^0.1.8", "rxjs": "5.0.0-beta.12", "systemjs": "0.19.39", "zone.js": "^0.6.25" }, "devDependencies": { "concurrently": "^3.1.0", "lite-server": "^2.2.2", "typescript": "^2.0.3", "typings": "^1.4.0" }}

3、在根文件夹（angular2-quickstart）下，创建tsconfig.json文件：

{ "compilerOptions": { "target": "es5", "module": "commonjs", "moduleResolution": "node", "sourceMap": true, "emitDecoratorMetadata": true, "experimentalDecorators": true, "removeComments": false, "noImplicitAny": false }}

4、在根文件夹（angular2-quickstart）下，创建typings.json文件：

{ "globalDependencies": { "core-js": "registry:dt/core-js#0.0.0+20160725163759", "jasmine": "registry:dt/jasmine#2.2.0+20160621224255", "node": "registry:dt/node#6.0.0+20160909174046" }}

5、在根文件夹（angular2-quickstart）下，创建systemjs.config.js(JavaScript脚本)文件：

/** * System configuration for Angular samples * Adjust as necessary for your application needs. */(function(global) { System.config({ paths: {  // paths serve as alias  'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: {  // our app is within the app folder  app: 'app',  // angular bundles  '@angular/core': 'npm:@angular/core/bundles/core.umd.js',  '@angular/common': 'npm:@angular/common/bundles/common.umd.js',  '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',  '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',  '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',  '@angular/http': 'npm:@angular/http/bundles/http.umd.js',  '@angular/router': 'npm:@angular/router/bundles/router.umd.js',  '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',  // other libraries  'rxjs': 'npm:rxjs',  'angular-in-memory-web-api': 'npm:angular-in-memory-web-api', }, // packages tells the System loader how to load when no filename and/or no extension packages: {  app: {  main: './main.js',  defaultExtension: 'js'  },  rxjs: {  defaultExtension: 'js'  },  'angular-in-memory-web-api': {  main: './index.js',  defaultExtension: 'js'  } } });})(this);

文件结构：

|_ angular2-quickstart|_ app| |_ app.component.ts| |_ main.ts|_ node_modules ...|_ typings ...|_ index.html|_ package.json|_ tsconfig.json|_ typings.json

安装依赖包（最关键一步）

使用 npm 命令来安装 package.json 中列出的依赖包。在命令行 cmd 窗口，输入：cd angular2-quickstart，进入angular2-quickstar文件夹下，输入下列命令：

npm install

创建TypeScript应用程序

1、在VS Code中，在根文件夹（angular2-quickstart）下，创建app子文件夹。

2、在子app文件夹下，创建TypeScript文件app.module.ts：

import { NgModule } from '@angular/core';import { BrowserModule } from '@angular/platform-browser';import { AppComponent } from './app.component';@NgModule({ imports: [ BrowserModule ], declarations: [ AppComponent ], bootstrap: [ AppComponent ]})export class AppModule { }

3、在子app文件夹下，创建TypeScript文件app.component.ts：

import { Component } from '@angular/core';@Component({ selector: 'my-app', template: '<h1>我的第一个 AngularJS 2 应用程序</h1>'})export class AppComponent { }

4、在子app文件夹下，创建TypeScript文件main.ts：

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';import { AppModule } from './app.module';const platform = platformBrowserDynamic();platform.bootstrapModule(AppModule);

5、在根文件夹（angular2-quickstart）下，创建html文件index.html：

<html><head> <title>Angular QuickStart</title> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="styles.css"> <!-- 1. Load libraries --> <!-- Polyfill(s) for older browsers --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/dist/zone.js"></script> <script src="node_modules/reflect-metadata/Reflect.js"></script> <script src="node_modules/systemjs/dist/system.src.js"></script> <!-- 2. Configure SystemJS --> <script src="systemjs.config.js"></script> <script>  System.import('app').catch(function(err) {   console.error(err);  }); </script></head><!-- 3. Display the application --><body> <my-app>Loading...</my-app></body></html>

6、在根文件夹（angular2-quickstart）下，创建css文件styles.css：

/* Master Styles */h1 { color: #369; font-family: Arial, Helvetica, sans-serif; font-size: 250%;}h2,h3 { color: #444; font-family: Arial, Helvetica, sans-serif; font-weight: lighter;}body { margin: 2em;}

配置应用程序

1、在VS Code中，在根文件夹（angular2-quickstart）下，创建.vscode子文件夹。

2、在.vscode子文件夹下，创建settings.json文件：

// 将设置放入此文件中以覆盖默认值和用户设置。{ "typescript.tsdk": "node_modules/typescript/lib", // ts 项目, 隐藏 .js 和 .js.map 文件 "files.exclude": {  "node_modules": true,  "**/*.js": { "when": "$(basename).ts" },  "**/*.js.map": true }}

3、在.vscode子文件夹下，创建tasks.json文件：

{ // See https://go.microsoft.com/fwlink/?LinkId=733558 // for the documentation about the tasks.json format "version": "0.1.0", "command": "cmd", "isShellCommand": true, "showOutput": "always", "args": ["/C npm start"]}

运行应用程序至此，配置完毕，按 Ctrl + Shift + B 编译，程序将会将Typescript编译成 Javascript ，同时启动一个 lite-server，加载我们编写的index.html。显示：我的第一个 Angular 2 应用程序