Check internet connection in web using Angular 4

Question

I am using Angular 4 for my application development. I need to check If the network connection is available for its have any Connection issue using Angular for. Is it possib

Answer 1

Detecting internet connection status in Angular application

We can achieve desired feature using window.ononline and window.onoffline events.

You can install service via npm command:

npm i ng-connection-service

Subscribe to monitor() method to get push notification whenever internet connection status is changed

import { Component } from '@angular/core';
import { ConnectionService } from 'ng-connection-service';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  status = 'ONLINE';
  isConnected = true;

  constructor(private connectionService: ConnectionService) {
    this.connectionService.monitor().subscribe(isConnected => {
      this.isConnected = isConnected;
      if (this.isConnected) {
        this.status = "ONLINE";
      }
      else {
        this.status = "OFFLINE";
      }
    })
  }
}