Check the Network Connection in PhoneGap

// check to see if the network is reachable
setTimeout(function() {
  navigator.network.isReachable("www.google.com",
  networkConnectionCheck, {isIpAddress:false});
}, 500);

function networkConnectionCheck(reachability) {
  if ( reachability.remoteHostStatus == NetworkStatus.NOT_REACHABLE ) {
    navigator.notification.alert("You appear to be offline.", "your app name");
  }
};