Angular 14 ngx-online-status Example to Track Internet Connection of Website Visitor in Browser Using TypeScript

Welcome folks today in this blog post we will be using the ngx-online-status library to track internet connection of website visitor in browser using typescript. All the full source code of the application is shown below.

Get Started

In order to get started you need to make a new angular project using the below command as shown below

ng new sampleapp

cd sampleapp

And after that you need to install the below libraries using the below command as shown below

npm i ngx-online-status

After that you will see the below directory structure of the angular app as shown below

And now you need to go to app.module.ts file and copy paste the following code

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { OnlineStatusModule } from 'ngx-online-status';

@NgModule({
  imports:      [ BrowserModule, OnlineStatusModule ],
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

import { NgModule } from '@angular/core';

import { BrowserModule } from '@angular/platform-browser';

import { AppComponent } from './app.component';

import { OnlineStatusModule } from 'ngx-online-status';

@NgModule({

imports: [ BrowserModule, OnlineStatusModule ],

declarations: [ AppComponent ],

bootstrap: [ AppComponent ]

})

export class AppModule { }

As you can see we are importing the ngx-online-status library at the top and then adding the OnlineStatusModule inside the imports array.

Now we need to go to app.component.html file and copy paste the following code

app.component.html

<div class="status" [class.offline]="status === OnlineStatusType.OFFLINE">
  {{ OnlineStatusType.OFFLINE ? 'Offline' : 'Online' }}
</div>

<div style="text-align:center">
  <h1>
    ngx-online-status
  </h1>
  <p>
    Try this package by turning on and off your internet connection
  </p>
</div>

</div>

<h1>

ngx-online-status

</h1>

<p>

Try this package by turning on and off your internet connection

</p>

</div>

As you can see in the above html code we are showing the current status of the internet connection such as showing if the user is offline or online depending upon the internet connection.

Now we need to go to app.component.css file and copy paste the following code

app.component.css

.status {
    height: 48px;
    background-color: #00c000;
    text-align: center;
    color: #fff;
    line-height: 48px;
    transition: background-color 1s ease;
}

.status.offline {
    background-color: grey;
}

.status {

height: 48px;

background-color: #00c000;

text-align: center;

color: #fff;

line-height: 48px;

transition: background-color 1s ease;

}

.status.offline {

background-color: grey;

}

Now we need to go to app.component.ts file and copy paste the following code which is shown below

app.component.ts

import { Component } from '@angular/core';
import { OnlineStatusService, OnlineStatusType } from 'ngx-online-status';

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

  constructor(private onlineStatusService: OnlineStatusService) {
    this.onlineStatusService.status.subscribe((status: OnlineStatusType) => {
      // use status
      this.status = status;
    });
  }
}

import { Component } from '@angular/core';

import { OnlineStatusService, OnlineStatusType } from 'ngx-online-status';

@Component({

selector: 'my-app',

templateUrl: './app.component.html',

styleUrls: [ './app.component.css' ]

})

export class AppComponent {

status: OnlineStatusType;

OnlineStatusType = OnlineStatusType;

constructor(private onlineStatusService: OnlineStatusService) {

this.onlineStatusService.status.subscribe((status: OnlineStatusType) => {

// use status

this.status = status;

});

}

As you can see we are importing the ngx-online-status library and from this we are using the OnlineStatusService to track the internet connection by using the subscribe() method. And then we are changing the status variable to either online or offline which is coming from the OnlineStatusService method.