websockets-index-v6.js

        /**
         * sendMessage will send a new message onto the Chat
         * */
        function sendMessage() {
            var newmessage = document.getElementById("message");
            if (newmessage != null) {
                let outgoingEvent = new SendMessageEvent(newmessage.value, "percy");
                sendEvent("send_message", outgoingEvent)
            }
            return false;
        }