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html - Angular 4 | app.component.html 内容未显示

转载 作者:行者123 更新时间:2023-12-04 14:00:47 25 4
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我的基本 Angular 应用程序没有显示 app.component.html内容在 localhost:4200 .它显示为空白,但是当我在 <app-root> </app-root> 中添加内容时,它显示。但根据教程网站,数据存在于component.html应该显示。请帮忙,我是 Angular 新手。
app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppComponent } from './app.component';

@NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
app.component.ts:
import { Component } from '@angular/core';

@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.scss']
})
export class AppComponent {
title = 'app 3';
}
app.component.html
<!--The content below is only a placeholder and can be replaced.-->
<div style="text-align:center">
<h1>
Welcome to {{title}}!
</h1>
<img width="300" src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNTAgMjUwIj4KICAgIDxwYXRoIGZpbGw9IiNERDAwMzEiIGQ9Ik0xMjUgMzBMMzEuOSA2My4ybDE0LjIgMTIzLjFMMTI1IDIzMGw3OC45LTQzLjcgMTQuMi0xMjMuMXoiIC8+CiAgICA8cGF0aCBmaWxsPSIjQzMwMDJGIiBkPSJNMTI1IDMwdjIyLjItLjFWMjMwbDc4LjktNDMuNyAxNC4yLTEyMy4xTDEyNSAzMHoiIC8+CiAgICA8cGF0aCAgZmlsbD0iI0ZGRkZGRiIgZD0iTTEyNSA1Mi4xTDY2LjggMTgyLjZoMjEuN2wxMS43LTI5LjJoNDkuNGwxMS43IDI5LjJIMTgzTDEyNSA1Mi4xem0xNyA4My4zaC0zNGwxNy00MC45IDE3IDQwLjl6IiAvPgogIDwvc3ZnPg==">
</div>
<h2>Here are some links to help you start: </h2>
<ul>
<li>
<h2><a target="_blank" href="https://angular.io/tutorial">Tour of Heroes</a></h2>
</li>
<li>
<h2><a target="_blank" href="https://github.com/angular/angular-cli/wiki">CLI Documentation</a></h2>
</li>
<li>
<h2><a target="_blank" href="https://blog.angular.io/">Angular blog</a></h2>
</li>
</ul>
index.html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Project3</title>
<base href="/">

<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<app-root>
</app-root>
</body>
</html>
我在控制台中收到此错误:
enter image description here

最佳答案

使用过时的 Angular 版本会导致此错误。

关于html - Angular 4 | app.component.html 内容未显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46173373/

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