How do I detect local connection state?

You can detect your local connection state to the internet on any JavaScript ready devices such as mobile phones and web browsers. Use advanced parameters and register the following callbacks (which fire during connection state changes):

    <div pub-key="demo" sub-key="demo" id="pubnub"></div>
    <script src="http://cdn.pubnub.com/pubnub.min.js"></script>
    <script>
    (function(){
        // listen for messages
        PUBNUB.subscribe({            // connect to a channel            channel : "channel_abc",            // resubscribe and reconnect
            restore : true,            // message received            callback : function() {alert(JSON.stingify(m))},            //  conneciton lost
            disconnect : function() {alert("Connection Lost!")},            // connection restored            reconnect : function() {alert("And we're Back!")},            // connection established            connect : function() {                // send a message                PUBNUB.publish({                    channel : "channel_abc",                    message : "Hi from PubNub."                })            }
        })
    })();
    </script>