/TypeScript/Angular no internet detection

Angular no internet detection

//Tested with Angular 8.1 and rxjs 6.5.2
import { Observable, Observer, fromEvent, merge } from 'rxjs';
import { map } from 'rxjs/operators';

ngOnInit(){
	this.createOnline$().subscribe(isOnline => console.log(isOnline));
}

createOnline$() {
return merge<boolean>(
  fromEvent(window, 'offline').pipe(map(() => false)),
  fromEvent(window, 'online').pipe(map(() => true)),
  new Observable((sub: Observer<boolean>) => {
	sub.next(navigator.onLine);
	sub.complete();
  }));
}

Source: stackoverflow.com

Similar codes

1 vote322 views2 answers
Css permit tabs on textarea react
TypeScript
2 votes296 views2 answers
Singleton design pattern typescript
TypeScript
1 vote340 views1 answer
Whats the file path for the documents folder linux
TypeScript
3 votes300 views3 answers
How to get value from autocomplete material ui
TypeScript
0 vote291 views1 answer
Read excel typescript
TypeScript
1 vote307 views1 answer
Should robots have faces?
TypeScript
2 votes296 views1 answer
Session not created: This version of ChromeDriver only supports Chrome version 85
TypeScript
1 vote305 views1 answer
Replace '\n' in string angular
TypeScript
3 votes321 views2 answers
Conditional classes angular
TypeScript
0 vote298 views1 answer
What will be the result of the cp /etc/hosts . command?
TypeScript