IonicCordovaNetwork.js

var myApp = angular.module('myApp').service('CordovaNetwork', ['$rootScope', '$ionicPlatform', '$q', function($rootScope, $ionicPlatform, $q) {
  // Get Cordova's global Connection object or emulate a smilar one
  var Connection = window.Connection || {
    'ETHERNET' : 'ethernet',
    'WIFI'     : 'wifi',
    'CELL_2G'  : 'cell_2g',
    'CELL_3G'  : 'cell_3g',
    'CELL_4G'  : 'cell_4g',
    'CELL'     : 'cell',
    'EDGE'     : 'edge',
    'UNKNOWN'  : 'unknown'
  };

  var asyncGetConnection = function () {
    var q = $q.defer();
    $ionicPlatform.ready(function () {
      if(navigator.connection) {
        q.resolve(navigator.connection);
      } else {
        q.reject('navigator.connection is not defined');
      }
    });
    return q.promise;
  };

  return {
    isOnline: function () {
      return asyncGetConnection().then(function(networkConnection) {
        var isConnected = false;

        switch (networkConnection.type) {
          case Connection.ETHERNET:
          case Connection.WIFI:
          case Connection.CELL_2G:
          case Connection.CELL_3G:
          case Connection.CELL_4G:
          case Connection.CELL:
            console.log(Connection.WIFI);
            console.log(networkConnection.type);
            isConnected = true;
            break;
        }
        return isConnected;
      });
    }
  };
}]);

myApp.controller('AppCtrl', function(CordovaNetwork){
  CordovaNetwork.isOnline().then(function(isConnected) {
    alert(isConnected);
  }).catch(function(err){
    console.log(err);
  });
});