Wan wan waifu

        (function() {
            String.prototype.capitalizeFirstLetter = function() {
                return this.charAt(0).toUpperCase() + this.slice(1);
            }

            var chat = document.getElementById("chat");
            var form = document.getElementById("chatter");
            var messageBox = document.getElementById("message");
            var status = document.getElementById("status");
            function addChatMessage(from, text) {
                li = document.createElement("li");
                    user = document.createElement("span");
                    user.className = "from";
                    user.innerText = from;
                li.appendChild(user);
                    message = document.createElement("span");
                    message.className = "message";
                    message.innerText = text;
                li.appendChild(message);

                chat.appendChild(li);
                chat.scrollTop = chat.scrollHeight;
            }
            var waifuMessages = 0;
            function typingWaifuMessage() {
                waifuMessages++;
                status.innerHTML = '<strong>Waifu</strong> is typing...';
                setTimeout(sendWaifuMessage, Math.random() * (3200 - 1200) + 1200);
            }
            function generateWan(comma = false) {
                wans = Math.floor(Math.random() * 3 + 1);
                wan = "wan ".repeat(wans);
                if (!comma) wan = wan.capitalizeFirstLetter();
                wan = wan.trim();
                punct = Math.floor(Math.random() * 5);
                if (punct == 3) {
                    wan += "?";
                } else if (punct == 4) {
                    wan += ", ";
                    wan += generateWan(true);
                } else {
                    wan += "!";
                }
                if (comma) return wan;
                emote = Math.floor(Math.random() * 4);
                if (emote == 3) {
                    wan += " ^-^";
                } else if (emote == 2) {
                    wan += " :3";
                }
                return wan;
            }
            function sendWaifuMessage() {
                wan = generateWan();
                addChatMessage("Waifu", wan);
                waifuMessages--;
                if (waifuMessages == 0) {
                    status.innerText = "";
                }
            }
            form.addEventListener("submit", function(evt) {
                evt.preventDefault();
                if (messageBox.value == "") return;
                addChatMessage("You", messageBox.value);
                messageBox.value = "";
                setTimeout(typingWaifuMessage, Math.random() * (1200 - 100) + 100);
            });
        })();