并行运行Angular和AngularJS框架

升级成功的关键之一是通过在同一个应用程序中并排运行两个框架,逐个移植AngularJS组件,逐步进行升级.这样就可以在不中断其他业务的情况下升级大型复杂应用程序,因为这项工作可以协同完成并在一段时间内完成. Angular中的升级模块旨在实现无缝增量升级.

有关更多信息,请参阅Angular 2 Guide – Upgrading from AngularJS to Angular

DEMO on PLNKR

也可以看看,

> Migrating AngularJS to Angular 4,5 (with DEMO)

I don’t want to run another server with a transpiler.

转换器可以在客户端运行.有可能但不推荐.

<script src="https://unpkg.com/zone.js@0.8.4?main=browser"></script>
<script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>
<script src="systemjs.config.js"></script>
<script>
  System.import('main.js').catch(function(err){ console.error(err); });
</script>

systemjs.config.js

/**
 * WEB ANGULAR VERSION
 * (based on systemjs.config.js in angular.io)
 * System configuration for Angular samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
  System.config({
    // DEMO ONLY! REAL CODE SHOULD NOT TRANSPILE IN THE BROWSER
    transpiler: 'ts',typescriptOptions: {
      // Copy of compiler options in standard tsconfig.json
      "target": "es5","module": "commonjs","moduleResolution": "node","sourceMap": true,"emitDecoratorMetadata": true,"experimentalDecorators": true,"lib": ["es2015","dom"],"noImplicitAny": true,"suppressImplicitAnyIndexErrors": true
    },meta: {
      'typescript': {
        "exports": "ts"
      }
    },paths: {
      // paths serve as alias
      'npm:': 'https://unpkg.com/'
    },// map tells the System loader where to look for things
    map: {
      // our app is within the app folder
      'app': 'app',// angular bundles
      '@angular/animations': 'npm:@angular/animations/bundles/animations.umd.js','@angular/animations/browser': 'npm:@angular/animations/bundles/animations-browser.umd.js','@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/animations': 'npm:@angular/platform-browser/bundles/platform-browser-animations.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/router/upgrade': 'npm:@angular/router/bundles/router-upgrade.umd.js','@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js','@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js','@angular/upgrade/static': 'npm:@angular/upgrade/bundles/upgrade-static.umd.js',// other libraries
      'rxjs':                      'npm:rxjs@5.0.1','angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js','ts':                        'npm:plugin-typescript@5.2.7/lib/plugin.js','typescript':                'npm:typescript@2.2.1/lib/typescript.js',},// packages tells the System loader how to load when no filename and/or no extension
    packages: {
      app: {
        main: './main.ts',defaultExtension: 'ts',meta: {
          './*.ts': {
            loader: 'systemjs-angular-loader.js'
          }
        }
      },rxjs: {
        defaultExtension: 'js'
      }
    }
  });

})(this);

有关更多信息,请参阅Angular 2 TypeScript QuickStart

将Angular TypeScript示例转换为ES6和ES5 JavaScript.

你可以用TypeScript中的Angular做任何事情,你也可以用JavaScript做.从一种语言转换到另一种语言主要是改变组织代码和访问Angular API的方式.

有关更多信息,请参阅Angular 2 Developer Cookbook – TypeScript to JavaScript