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

For the required task, There is a npm package, ng-connection-service. Below is the complete code:

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

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})

export class AppComponent {
  title = 'internet-connection-check';
  status = 'ONLINE'; //initializing as online by default
  isConnected = true;

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

  }

}

Also you can find the working complete code over: click here