一、日期管道

1-1.news.component.ts

import { Component, OnInit } from '@angular/core';
@Component({
  selector: 'app-news',
  templateUrl: './news.component.html',
  styleUrls: ['./news.component.css']
})
export class NewsComponent implements OnInit {
  time = new Date();
  constructor() {}
  ngOnInit(): void {
  }
}

1-2.news.component.html

<h4>管道</h4>
<p>{{time | date:"yyyy-MM-dd HH:mm:ss"}}</p>