Node.js制作简单聊天室

varnet = require('net');

varcount = 0,

  users = {};

varserver = net.createServer(function(conn) {

  console.log('连接到');

  conn.write(

     "\r\n > welcome to node-chat!"

    +"\r\n > "+ count +" other people are connected at this time."

    +"\r\n > please write your name and press enter: "

   );

  count++;

  // 代表当前连接的昵称

  varnickname;

  console.log(conn);

  conn.on('data',function(data) {

    // 删除\r\n

    // data = data.replace('\r\n', '  ');

    // 当前注册的昵称不存在

    if(!nickname) {

      // 用户名存在

      if(users[data]) {

        conn.write('nickname in use');

        return;

      }else{

        // 用户名给nickname

        nickname = data;

        users[nickname] = conn;

        for(variinusers) {

          users[i].write('\r\n > '+ nickname +' join our room \r\n > I: ');

        }

      }

    }else{

      // 开始聊天

      for(variinusers) {

        if(i != nickname) {

          users[i].write('\r\n > '+ nickname +': '+ data);

        }

      }

    }

  });

  conn.on('close',function() {

    count--;

  });

  conn.setEncoding('utf8');

});

server.listen(3000,function() {

  console.log('服务器监听端口3000');

})