从5分钟快速入门开始,我一直在尝试使用Angular2 beta,并遇到了一个让我困惑的问题。
这里有一个简化版本来展示我遇到的问题。首先,这是一个完美运行的hello world应用程序。
package.json
{
"name": "...",
"version": "0.0.1",
"description": "...",
"author": {
"name": "...",
"email": "..."
},
"scripts": {
"tsc": "tsc",
"tsc:w": "tsc -w",
"lite": "lite-server",
"start": "concurrent \"npm run tsc:w\" \"npm run lite\" "
},
"license": "ISC",
"dependencies": {
"angular2": "2.0.0-beta.0",
"bootstrap": "^3.3.6",
"es6-promise": "^3.0.2",
"es6-shim": "^0.33.3",
"reflect-metadata": "^0.1.2",
"rxjs": "5.0.0-beta.0",
"systemjs": "0.19.6",
"zone.js": "^0.5.10"
},
"devDependencies": {
"concurrently": "^1.0.0",
"lite-server": "^1.3.1",
"typescript": "^1.7.3"
}
}
index.html
<head>
<title>Title</title>
<link rel="stylesheet" href="node_modules/bootstrap/dist/css/bootstrap.min.css">
<link href="styles.css" rel="stylesheet" />
<!-- 1. Load libraries -->
<script src="node_modules/es6-shim/es6-shim.js"></script>
<script src="node_modules/angular2/bundles/angular2-polyfills.js"> </script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="node_modules/rxjs/bundles/Rx.js"></script>
<script src="node_modules/angular2/bundles/angular2.dev.js"></script>
<!-- 2. Configure SystemJS -->
<script>
System.config({
packages: {
app: {
format: 'register',
defaultExtension: 'js'
}
}
});
System.import('app/boot')
.then(null, console.error.bind(console));
</script>
</head>
<!-- 3. Display the application -->
<body>
<my-app></my-app>
</body>
app/boot.ts
import {bootstrap} from 'angular2/platform/browser'
import {AppComponent} from './app.component'
import {AccountService} from './accounts/account.service'
bootstrap(AppComponent);
应用程序/应用程序组件.ts
import {Component, View} from 'angular2/core';
import {RegisterFormComponent} from './accounts/register-form.component'
@Component({
selector: 'my-app',
})
@View({
template: 'hello world',
})
export class AppComponent {
}
我最终希望能够调用我的Web Api服务,因此我试图遵循Http文档,我将boot.ts更新如下:
新的app/boot.ts
import {bootstrap} from 'angular2/platform/browser'
import {AppComponent} from './app.component'
import {AccountService} from './accounts/account.service'
import {HTTP_PROVIDERS} from 'angular2/http';
bootstrap(AppComponent, [HTTP_PROVIDERS]);
这里是问题的瓶颈。
Chrome 给了我:
uncaught SyntaxError: Unexpected token < - http:1
uncaught SyntaxError: Unexpected token < - angular2-polyfills.js:138
evaluating http://localhost:3000/angular2/http
error loading http://localhost:3000/app/boot.js
如果我尝试将HTTP_PROVIDERS设置为我的组件的viewProvider,它也会失败。
是否有其他人在使用angular2 beta中成功注入Http的经验?
- Visual Studio 2015
- Node.JS和Node.JS工具(适用于Visual Studio)
- 使用“NPM start”编译和运行
<script src=".../http.dev.js"></script>
。 - Eric Martinezimport
语法。在此之前,需要使用像system.js这样的polyfill。 - Evan Plaice