proekton.com/chat/templates/chat2.js

var SocketHandler = function () {
            var domain = '{{ request.META.HTTP_HOST }}';
            var port = '{{ request.META.SERVER_PORT }}';
            domain = domain.replace(':' + port, '');
            var url = 'ws://' + domain + ':8888/chat/' + userId + '/';
            var sock = new WebSocket(url);
            var intervalId;
            sock.onopen = function () {
                console.log("Start connect");
                intervalId = setInterval(function () {
                    sock.send('{"dummy": 1}');
                }, 150000);
            };
            sock.onmessage = function (event) {
                console.log(event.data);
                var message = JSON.parse(event.data);
                var inbox;
                if (message.answer_type == 'contact' || message.answer_type == 'add_message_contact') {
                    inbox = document.getElementById('message-chat-space');
                } else if (message.answer_type == 'order' || message.answer_type == 'add_message_order') {
                    inbox = document.getElementById('message-chat-order-space');
                } else if (message.answer_type == 'add_message_team') {
                    inbox = document.getElementById('message-chat-team-space');
                }
                inbox.innerHTML += '<div class="col-lg-12 insetCommChat"><div class="topCommChat">' +
                        '<p class="nameCommChat">Вы</p> <span>Сейчас</span></div>' +
                        '<p class="textCommChat">' + message.msg + '</p></div>';

            };

            this.send_order_message = function (orderId) {
                var data = {
                    "format_type": "order_message",
                    "order_id": orderId
                }
                sock.send(JSON.stringify(data));
                console.log(data);
            };

            this.send_contact_message = function (userId) {
                var data = {
                    "format_type": "add_message",
                    "user_id": userId
                }
                sock.send(JSON.stringify(data));
                console.log(data);
            };

            this.add_contact_message = function (messageData) {
                console.log(messageData);
                sock.send(JSON.stringify(messageData));
            };

            this.send_message = function (form) {
                var elements = form.elements;
                var data = {};
                var i = 0;
                for (var i; i < elements.length; i++) {
                    if (elements[i].name == 'message') {
                        data[elements[i].name] = elements[i].value;
                    }
                }
                sock.send(JSON.stringify(data));
                var textareaMessage = document.getElementById("message");
                textareaMessage.value = "";

            }
        }