function publish() {
	var messageText = document.querySelector("#console-message-input");
	var message = {from: myState.username, avatar: myState.avatar, text: messageText.value}; //You can add any attributes you want
	pubnub.publish({
		channel : chat_channel,
		message : message,
		callback: function(res){
			console.log('this callback willl be called when the message is sent');
            	},
            	error: function(err){
			console.log('an error has occurred while publishing the message');
		}
	});

        messageText.value = ' ';
}

//reference to the send button element
var messageSend = document.querySelector("#send-button");
messageSend.onclick = publish;