Recently, I have been working on some of the Hybrid Application . I come across a requirement to detect that whether device is connected to Internet or not? Since I were developing Hybrid Application so I had an option to detect Internet using HTML5 . However this approach had a problem in the browsers do not support HTML5. Better approach to detect Internet connectivity of device is through Cordova (PhoneGap).
You can detect device is online or offline in if condition as following, If device is connected to internet then you can check type of the connection in device using Cordova as well. You can do that as following Make sure you have added the reference of cordova to work with this.
Best practice is to create a function to detect device connectivity status and call that function when the device is ready. I hope you find this post useful. Thanks for reading. 
