/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

61 votes259 views6 answers
Ps1 cannot be loaded because running scripts is disabled on this system
TypeScript
0 vote102 views1 answer
Typescript get the time moment
TypeScript
39 votes137 views5 answers
AppData\Roaming\npm\ng.ps1 cannot be loaded because running scripts is disabled on this system.
TypeScript
0 vote103 views1 answer
How to calculate power of hypothesis test
TypeScript
0 vote131 views1 answer
Write a C proogram to find the roots of quadratic equation
TypeScript
0 vote127 views1 answer
Stats splunk many fields
TypeScript
6 votes110 views1 answer
Angular devkit build angular error
TypeScript
0 vote100 views1 answer
Make foreign key sql in exists row
TypeScript
0 vote108 views1 answer
Creating different objects in node.js
TypeScript
0 vote118 views1 answer
Accessing formcontrol from fromgroup
TypeScript