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Visual Studio Code——Angular2 Hello World 之 2.0
最近看到一篇用Visual Studio Code开发Angular2的文章，也是一篇入门教程，地址为：使用Visual Studio Code開發Angular 2專案。这里按部就班的做了一遍，感觉很方便，并且没有遇到楼主的一些问题，应该是安装环境有些不同。这里只为记录一下。再次感谢！
一、随便新建一个目录，这里为：F:\Visual Studio Code\angular2_1，并用Visual Studio Code
二、依次新建如下四个文件，参考https://angular.cn/docs/ts/latest/quickstart.html
package.json 用来标记出本项目所需的 npm 依赖包。
tsconfig.json 定义了 TypeScript 编译器如何从项目源文件生成 JavaScript 代码。
typings.json 为那些 TypeScript 编译器无法识别的库提供了别的定义文件。
systemjs.config.js 为模块加载器提供了该到哪里查找应用模块的信息，并注册了所有必备的依赖包。 它还包括文档中后面的例子需要用到的包。
1 { 2 "name": "angular-quickstart", 3 "version": "1.0.0", 4 "scripts": { 5 "start": "tsc && concurrently \"tsc -w\" \"lite-server\" ", 6 "lite": "lite-server", 7 "postinstall": "typings install", 8 "tsc": "tsc", 9 "tsc:w": "tsc -w",10 "typings": "typings"11 },12 "license": "ISC",13 "dependencies": {14 "@angular/common": "~2.0.1",15 "@angular/compiler": "~2.0.1",16 "@angular/core": "~2.0.1",17 "@angular/forms": "~2.0.1",18 "@angular/http": "~2.0.1",19 "@angular/platform-browser": "~2.0.1",20 "@angular/platform-browser-dynamic": "~2.0.1",21 "@angular/router": "~3.0.1",22 "@angular/upgrade": "~2.0.1",23 "angular-in-memory-web-api": "~0.1.1",24 "bootstrap": "^3.3.7",25 "core-js": "^2.4.1",26 "reflect-metadata": "^0.1.8",27 "rxjs": "5.0.0-beta.12",28 "systemjs": "0.19.39",29 "zone.js": "^0.6.25"30 },31 "devDependencies": {32 "concurrently": "^3.0.0",33 "lite-server": "^2.2.2",34 "typescript": "^2.0.3",35 "typings":"^1.4.0"36 }37 }
1 { 2 "compilerOptions": { 3 "target": "es5", 4 "module": "commonjs", 5 "moduleResolution": "node", 6 "sourceMap": true, 7 "emitDecoratorMetadata": true, 8 "experimentalDecorators": true, 9 "removeComments": false,10 "noImplicitAny": false11 }12 }
1 {2 "globalDependencies": {3 "core-js": "registry:dt/core-js#0.0.0+20160725163759",4 "jasmine": "registry:dt/jasmine#2.2.0+20160621224255",5 "node": "registry:dt/node#6.0.0+20160909174046"6 }7 }
1 /** 2 * System configuration for Angular samples 3 * Adjust as necessary for your application needs. 4 */ 5 (function (global) { 6 System.config({ 7 paths: { 8 // paths serve as alias 9 ‘npm:‘: ‘node_modules/‘10 },11 // map tells the System loader where to look for things12 map: {13 // our app is within the app folder14 app: ‘app‘,15 // angular bundles16 ‘@angular/core‘: ‘npm:@angular/core/bundles/core.umd.js‘,17 ‘@angular/common‘: ‘npm:@angular/common/bundles/common.umd.js‘,18 ‘@angular/compiler‘: ‘npm:@angular/compiler/bundles/compiler.umd.js‘,19 ‘@angular/platform-browser‘: ‘npm:@angular/platform-browser/bundles/platform-browser.umd.js‘,20 ‘@angular/platform-browser-dynamic‘: ‘npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js‘,21 ‘@angular/http‘: ‘npm:@angular/http/bundles/http.umd.js‘,22 ‘@angular/router‘: ‘npm:@angular/router/bundles/router.umd.js‘,23 ‘@angular/forms‘: ‘npm:@angular/forms/bundles/forms.umd.js‘,24 // other libraries25 ‘rxjs‘: ‘npm:rxjs‘,26 ‘angular-in-memory-web-api‘: ‘npm:angular-in-memory-web-api‘,27 },28 // packages tells the System loader how to load when no filename and/or no extension29 packages: {30 app: {31 main: ‘./main.js‘,32 defaultExtension: ‘js‘33 },34 rxjs: {35 defaultExtension: ‘js‘36 },37 ‘angular-in-memory-web-api‘: {38 main: ‘./index.js‘,39 defaultExtension: ‘js‘40 }41 }42 });43 })(this);
三、按着“shift”键，右键项目文件夹，选择“在此处打开命令窗口（W）”，键入DOS命令窗口，键入”npm install“,截图如下：
下载了好多文件，依赖的类库可真多，之后的文件夹目录如下：
四、在根目录下新建app文件夹，并依次创建下面三个文件app.module.ts、app.component.ts、main.ts;并在根目录下新建html页面——index.html
1 import { NgModule } from ‘@angular/core‘;2 import { BrowserModule } from ‘@angular/platform-browser‘;3 import { AppComponent } from ‘./app.component‘;4 @NgModule({5 imports: [ BrowserModule ],6 declarations: [ AppComponent ],7 bootstrap: [ AppComponent ]8 })9 export class AppModule { }
1 import { Component } from ‘@angular/core‘;2 @Component({3 selector: ‘my-app‘,4 template: ‘<h1>My First Angular App</h1>‘5 })6 export class AppComponent { }
1 import { platformBrowserDynamic } from ‘@angular/platform-browser-dynamic‘;2 import { AppModule } from ‘./app.module‘;3 const platform = platformBrowserDynamic();4 platform.bootstrapModule(AppModule);
1 <html> 2 <head> 3 <title>Angular QuickStart</title> 4 <meta charset="UTF-8"> 5 <meta name="viewport" content="width=device-width, initial-scale=1"> 6 <link rel="stylesheet" href="styles.css"> 7 <!-- 1. Load libraries --> 8 <!-- Polyfill(s) for older browsers --> 9 <script src="node_modules/core-js/client/shim.min.js"></script>10 <script src="node_modules/zone.js/dist/zone.js"></script>11 <script src="node_modules/reflect-metadata/Reflect.js"></script>12 <script src="node_modules/systemjs/dist/system.src.js"></script>13 <!-- 2. Configure SystemJS -->14 <script src="systemjs.config.js"></script>15 <script>16 System.import(‘app‘).catch(function(err){ console.error(err); });17 </script>18 </head>19 <!-- 3. Display the application -->20 <body>21 <my-app>Loading...</my-app>22 </body>23 </html>
五、按照如下截图，设定启动作业：
设置成功之后，在启动文件launch.json中做如上图修改：${workspaceRoot}/node_modules/lite-server/bin/lite-server
六、在菜单栏中，点击”查看“/”命令面板“或者快捷键”cltr+shift+p“,键入”configure“，选择”任务：配置任务运行程序“，之后选择”TypeScript-tsconfig.json 创建TypeScript项目“，如下图：
按照教程博客所说，要task.json做如上图修改，否则下面调试时如果出现错误没有任何提示。
七、以上已经完成了所有的工作，开始调试。按下”ctrl+shift+b“,执行编译，会将ts文件编译为js文件，如下图：
如果编译成功（如上图），就可以按”F5“了，如下图：
但是如果编译不成功，应该是没有安装tsc,使用命令”npm install -g typescript“安装一下，之后再编译就没问题了，如下图：
这里完全是按着上面的教程来的，有点不好意思，只作为练习记录，再次感谢!
Visual Studio Code——Angular2 Hello World 之 2.0