我想要做的事情:我基本上是在尝试迭代products
变量并将内容显示为行。
问题:问题主要在于它似乎不起作用。添加ngFor
时它的作用是它完全隐藏了应用程序的Angular部分。这意味着,出现了错误。当我检查控制台时,它似乎没有向我展示任何有用的东西(看起来好友消息还没有针对Angular2)。
我尝试了什么:我尝试导入CORE_DIRECTIVES
并将其作为指令传递,但这并不起作用。我也尝试删除整个ngFor
,然后应用程序的其余部分似乎完美无缺。
我想要的是什么:如果您能查看我的代码并让我知道我的错误是什么,我将非常感谢。提前谢谢。
所以,这是app.ts
:
import { bootstrap } from "angular2/platform/browser";
import { Component } from "angular2/core";
import { Product } from './models.ts';
@Component({
selector: 'table-rows',
template: `
<tr *ngFor="#product of products">
<td>{{ product.name }}</td>
<td>{{ product.quantity }}</td>
<td>{{ product.unitPrice }}</td>
</tr>
`
})
class TableRows {
products: Product[];
constructor() {
this.products.push(new Product('GALAXY Note 3', 10, 500));
this.products.push(new Product('MacBook Pro', 25, 1500));
}
}
@Component({
selector: 'app',
directives: [TableRows],
template: `
<table class="table">
<thead>
<tr>
<td>Product Name</td>
<td>Product Quantity</td>
<td>Product Unit Price</td>
</tr>
</thead>
<tbody>
<table-rows></table-rows>
</tbody>
</table>
`
})
class App {
constructor () {
}
}
bootstrap(App);
这里是models.ts
:
export class Product {
name: string;
quantity: number;
unitPrice: number;
constructor (
name: string,
quantity: number,
unitPrice: number
) {
this.name = name;
this.quantity = quantity;
this.unitPrice = unitPrice;
}
}
最后,这里是index.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Stock Table</title>
<link href="css/bootstrap.min.css" rel="stylesheet">
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
<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>
</head>
<body>
<script>
System.config({
packages: {
app: {
format: 'register',
defaultExtension: 'js'
}
}
});
System.import('ts/app.js')
.then(null, console.error.bind(console));
</script>
<nav class="navbar navbar-default navbar-static-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">Stock Table</a>
</div>
<div id="navbar" class="collapse navbar-collapse">
</div>
</div>
</nav>
<div class="container">
<app></app>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="js/bootstrap.min.js"></script>
</body>
</html>
答案 0 :(得分:0)
例如:
*ngfor = "let number of numbers"
可能的错误:
- 拼写检查,
- 数组初始化,
- 不正确的HTML语法。
醇>