/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

0 vote315 views1 answer
Git rebase two commits to one
TypeScript
0 vote181 views1 answer
Youtube comments scrape r
TypeScript
2 votes185 views1 answer
Vscode custom snippets how to use file name
TypeScript
2 votes180 views2 answers
Python iterate object
TypeScript
4 votes275 views1 answer
Require('dotenv').config() typescript
TypeScript
5 votes174 views1 answer
Python how to check if all elements in list are the same
TypeScript
0 vote137 views3 answers
How to send email to multiple recipients
TypeScript
1 vote180 views1 answer
Typescript function parameters optional destruct
TypeScript
2 votes149 views1 answer
Mysql update if exists else leave
TypeScript
1 vote168 views1 answer
Typescript space between capital letters
TypeScript