/TypeScript/Display digital clock in angular

Display digital clock in angular

// in ts file

import { Component, OnInit } from '@angular/core';
import { Subscription, timer } from 'rxjs';
import { map, share } from "rxjs/operators";
import { OnDestroy } from '@angular/core';


@Component({
  selector: 'app-clock',
  templateUrl: './clock.component.html',
  styleUrls: ['./clock.component.scss']
})
export class ClockComponent implements OnInit, OnDestroy {

  date: Date = new Date();

  constructor() {
  }

  time = new Date();
  rxTime = new Date();
  intervalId;
  subscription: Subscription;

  ngOnInit() {
    // Using Basic Interval
    this.intervalId = setInterval(() => {
      this.time = new Date();
    }, 1000);

    // Using RxJS Timer
    this.subscription = timer(0, 1000)
      .pipe(
        map(() => new Date()),
        share()
      )
      .subscribe(time => {
        this.rxTime = time;
      });
  }

  ngOnDestroy() {
    clearInterval(this.intervalId);
    if (this.subscription) {
      this.subscription.unsubscribe();
    }
  }

}

// in html
 Simple Clock:
 <div>{{ time | date: 'hh:mm:ss a' }}</div>
 RxJS Clock:
 <div>{{ rxTime | date: 'hh:mm:ss a' }}</div>

Similar codes

7 votes131 views3 answers
Type script array
TypeScript
0 vote135 views1 answer
Peer of typescript@>=2.8.0
TypeScript
0 vote135 views1 answer
Get all the ids in an array of objects ts
TypeScript
0 vote126 views1 answer
Change event doesn't work on dynamically generated elements .
TypeScript
0 vote140 views1 answer
Python program to print the contents of a directory using os module
TypeScript
1 vote141 views1 answer
Google shets if
TypeScript
0 vote150 views1 answer
Error NG8002: Can't bind to 'ngbCollapse' since it isn't a known property of 'ul'.
TypeScript
-3 votes130 views1 answer
How do we write comments in myql
TypeScript
0 vote138 views2 answers
Angular http
TypeScript
2 votes155 views1 answer
Ts-node call function from command line
TypeScript