Cordova provides cordova-plugin-network-information that checks the cellular and wifi connection of the device and also it can check the internet connection.

Installation:

To install this plugin run the following command
 

cordova plugin add cordova-plugin-network-information

Supported Platforms:

   * Amazon Fire OS
   * Android
   * BlackBerry 10
   * Browser
   * iOS
   * Windows Phone 7 and 8
   * Tizen
   * Windows
   * Firefox OS

Connection: There is an object connection which you can get by using navigator.connection. This provides information about networks of device.

Properties:

   * connection.type

Constants

   * Connection.UNKNOWN
   * Connection.ETHERNET
   * Connection.WIFI
   * Connection.CELL_2G
   * Connection.CELL_3G
   * Connection.CELL_4G
   * Connection.CELL
   * Connection.NONE

connection.type:

It identifies the network information state and connection type of the device.

Example:

function checkNetwork() {
    var network_State = navigator.connection.type;

    var n_states = {};
    n_states[Connection.UNKNOWN]  = 'Unknown connection';
    n_states[Connection.ETHERNET] = 'Ethernet connection';
    n_states[Connection.WIFI]     = 'WiFi connection';
    n_states[Connection.CELL_2G]  = 'Cell 2G connection';
    n_states[Connection.CELL_3G]  = 'Cell 3G connection';
    n_states[Connection.CELL_4G]  = 'Cell 4G connection';
    n_states[Connection.CELL]     = 'Cell generic connection';
    n_states[Connection.NONE]     = 'No network connection';

    console.log(Connection type: ' + n_states[network_State]);
}

checkNetwork();

Network-related Events:

offline

when the device has no internet connection, this event fires.

document.addEventListener("offline", onOffline, false);

function onOffline() {
    // Handle the offline event
}

online

When a device which is not connected to internet changes its state to connected to internet, this event fires.

document.addEventListener("online", onOnline, false);

function onOnline() {
    // Handle the online event
}