/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

0 vote297 views1 answer
Warning: format ‘%s’ expects argument of type ‘char *’, but argument 2 has type ‘int’
TypeScript
2 votes239 views2 answers
Eslint no-unused-vars typescript
TypeScript
1 vote270 views1 answer
How to count positive elements numpy
TypeScript
0 vote167 views1 answer
Enable anchor scrolling angular
TypeScript
0 vote248 views1 answer
Check type of object typescript
TypeScript
0 vote211 views1 answer
Create an array for looping typescript
TypeScript
0 vote181 views1 answer
Mat stepper dont clickable
TypeScript
1 vote222 views2 answers
Solitaire
TypeScript
1 vote201 views1 answer
Python check if attribute exists in class
TypeScript
1 vote230 views1 answer
==> restfulapi: Booting VM... There was an error while executing `VBoxManage`, a CLI used by Vagrant for controlling VirtualBox. The command and stderr is shown below.
TypeScript