为Angular 2制作测试应用但由于某些原因我无法解决,我的应用仍然停留在“正在加载......”
以下是文件:
app.component.ts:
import {Component} from '@angular/core';
import {LittleTourComponent} from './little-tour.component';
@Component({
selector: 'my-app',
template: `
<h1>Test</h1>
<little-tour></little-tour>
`,
directives: [LittleTourComponent]
})
export class AppComponent { }
小tour.component.ts:
import {Component} from '@angular/core';
@Component ({
selector: 'little-tour',
template: `
<input #newHero (keyup.enter)='addHero(newHero.value)'
(blur)="addHero.(newHero.value); newHero.value = '' ">
<button (click) = addHero(newHero.value)>Add</button>
<ul><li *ngFor='let hero of heroes'>{{hero}}</li></ul>
`,
})
export class LittleTourComponent {
heroes = ['Windstorm', 'Bombasto', 'Magneta', 'Tornado'];
addHero (value: string) {
if (value) {
this.heroes.push(value);
}
}
}
的index.html:
<html>
<head>
<title>Angular 2 QuickStart</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<!-- 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>
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>
和main.ts:
import {bootstrap} from '@angular/platform-browser-dynamic';
import {AppComponent} from './app.component';
bootstrap(AppComponent);
当我开始使用npm时,终端不会产生任何错误,但我确信在代码中我肯定错过了一些东西。由于我仍然试图围绕Angular 2的基础知识,所以非常感谢您的帮助。谢谢!
答案 0 :(得分:3)
现在可以使用:
<input #newHero (keyup.enter)='addHero(newHero.value)'
(blur)="addHero" newHero.value = '' >
您可以将输入框中的值添加到列表中,如下所示:
<input [(ngModel)] = "newHero">
<button (click) = addHero(newHero)>Add</button>
<ul><li *ngFor='let hero of heroes'>{{hero}}</li></ul>