节点js - 创建持久的私人聊天室

// Server

var nowjs = require('now');
var everyone = nowjs.initialize(httpServer);

everyone.now.joinRoom = function(room) {
    nowjs.getGroup(room).addUser(this.user.clientId);
}

everyone.now.leaveRoom = function(room) {
    nowjs.getGroup(room).removeUser(this.user.clientId);
}

everyone.now.messageRoom = function(room, message) {
    nowjs.getGroup(room).now.message(message);
}

// Client

var currRoom = "";

$(".join").click(function() {
    currRoom = ...
    now.joinRoom(currRoom);
});

$(".send").click(function() {
    var input = ...
    now.messageRoom(currRoom, input.text());
});

now.messageRoom = function(message) {
    $("messages").append($("<div></div>").text(message));
};