led123.js

client = new Paho.MQTT.Client("192.168.43.111", Number(1883), "clientId");

		// set callback handlers
		client.onConnectionLost = onConnectionLost;
		client.onMessageArrived = onMessageArrived;

		// connect the client
		client.connect({
				onSuccess:onConnect
				});


		// called when the client connects
		function onConnect() {
			// Once a connection has been made, make a subscription and send a message.
			console.log("Connected!");
			client.subscribe("led");
	
		}
		function ledtoggle(e) {
			var message = new Paho.MQTT.Message(e);
			message.destinationName = "led";
			message.qos = 0;
			client.send(message);
		}

		// called when the client loses its connection
		function onConnectionLost(responseObject) {
		  if (responseObject.errorCode !== 0) {
		    console.log("onConnectionLost:"+responseObject.errorMessage);
		  }
		}

		/*// called when a message arrives
		function onMessageArrived(message) {
			console.log("onMessageArrived:"+message.payloadString);	
			console.log("Topic:" + message.destinationName);
			console.log("QoS:"+ message.qos);
			
			if(message.destinationName=="led")
			{
				$("#smoke").text(message.payloadString);
			}

		}*/