我正在 Angular (Angular2 RC4) 中创建一个简单的应用程序,但我发现很难在 Nodejs 中使用实时服务器运行该应用程序。
我想帮助您了解如何解决 Chrome 控制台中出现的错误。
Chrome 控制台出错:
browser_adapter.ts:82
EXCEPTION: Template parse errors:
Property binding ngif not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "directives" section. ("
</video-list>
[ERROR ->]<video-detail *ngif="selectedVideo" [video]="selectedVideo">
</video-detail>"): AppComponent@8:0**
应用程序组件.ts
import {Input, Output, Component} from '@angular/core'
import {Config} from './config.service'
import {Video} from './video'
import {VideoListComponent} from './videolist.component'
import {VideoDetailComponent} from './videodetail.component'
@Component({
selector: 'my-app',
templateUrl: 'app/app.component.html',
directives: [VideoListComponent, VideoDetailComponent]
})
export class AppComponent {
title = Config.TITLE_PAGE;
videos: Array<Video>;
selectedVideo : Video;
constructor() {
this.videos = [
new Video(1, "Test", "www.test.com", "Test Description"),
new Video(2, "Test 2", "www.test2.com")
]
}
onSelectVideo(video) {
//console.log(JSON.stringify(video));
this.selectedVideo = video;
}
}
应用程序组件.html
<h1 class="jumbotron">
{{title}}
</h1>
<!-- conceito [binding] videos recebe os valores do AppComponent.ts-->
<video-list [videos]="videos"
(selectVideo)="onSelectVideo($event)">
</video-list>
<video-detail *ngif="selectedVideo" [video]="selectedVideo">
</video-detail>
包.json
{
"name": "angularbase",
"version": "1.0.0",
"description": "Projeto Base",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [
"projeto",
"base",
"angular",
"angular2"
],
"author": "Eduardo Cordeiro",
"license": "ISC",
"dependencies": {
"@angular/common": "^2.0.0-rc.4",
"@angular/compiler": "^2.0.0-rc.4",
"@angular/core": "^2.0.0-rc.4",
"@angular/forms": "^0.2.0",
"@angular/http": "^2.0.0-rc.4",
"@angular/platform-browser": "^2.0.0-rc.4",
"@angular/platform-browser-dynamic": "^2.0.0-rc.4",
"@angular/upgrade": "^2.0.0-rc.4",
"angular2-in-memory-web-api": "0.0.7",
"bootstrap": "^3.3.6",
"rxjs": "^5.0.0-beta.6",
"systemjs": "^0.19.27",
"zone.js": "^0.6.12"
}
}
系统js.config.js
(function (global) {
// mapa de carregamento do systemjs
var map = {
'app': 'app', // 'dist',
'rxjs': 'node_modules/rxjs',
'angular2-in-memory-web-api': 'node_modules/angular2-in-memory-web-api',
'@angular': 'node_modules/@angular'
};
// pacotes que o systemjs pode carregar
// caso não encontre o arquivo no mapa
var packages = {
'app': { main: 'boot.js', defaultExtension: 'js' },
'rxjs': { defaultExtension: 'js' },
'angular2-in-memory-web-api': { defaultExtension: 'js' },
};
var packageNames = [
'@angular/common',
'@angular/compiler',
'@angular/core',
'@angular/http',
'@angular/platform-browser',
'@angular/platform-browser-dynamic',
'@angular/router',
'@angular/router-deprecated',
'@angular/testing',
'@angular/upgrade',
];
// mapeia os pacotes do angular de acordo com o packageName acima
packageNames.forEach(function (pkgName) {
packages[pkgName] = { main: 'index.js', defaultExtension: 'js' };
});
var config = {
map: map,
packages: packages
}
if (global.filterSystemConfig) { global.filterSystemConfig(config); }
System.config(config);
})(this);
tsconfig.json
{
"compilerOptions": {
"target": "es6",
"module": "system",
"sourceMap": true,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"removeComments": false,
"noImplicitAny": false,
"watch": true
},
"exclude": [
"node_modules"
]
}