io.emit和socket.emit

一尘不染

io.emit和socket.emit

node.js

我是socket.io的新手，遇到了一些看起来很奇怪的事情。我实际上不知道和之间的区别socket.emit，io.emit但是在任何地方都找不到解释。

io.on('connection', function(socket){
  io.emit('connected')  // <<<< HERE >> socket.emit('connected');
  socket.on('disconnect', function(){
    io.emit('disconnect')
  });
  socket.on('chat message', function(msg){
    io.emit('chat message', msg);
  });
});

server.listen(3000);

这是我的但是服务器的东西时，我改变io到socket该消息时，用户是谁连接的连接将仅被显示。io.emit将消息发送给所有用户。

也许应该是这样，或者只是一些可怕的骇客？让我知道您是否需要客户端HTML。

阅读 428

2020-07-07

共1个答案

一尘不染

这是一个补充文档，以供参考。

socket.emit('message', "this is a test"); //sending to sender-client only
socket.broadcast.emit('message', "this is a test"); //sending to all clients except sender
socket.broadcast.to('game').emit('message', 'nice game'); //sending to all clients in 'game' room(channel) except sender
socket.to('game').emit('message', 'enjoy the game'); //sending to sender client, only if they are in 'game' room(channel)
socket.broadcast.to(socketid).emit('message', 'for your eyes only'); //sending to individual socketid
io.emit('message', "this is a test"); //sending to all clients, include sender
io.in('game').emit('message', 'cool game'); //sending to all clients in 'game' room(channel), include sender
io.of('myNamespace').emit('message', 'gg'); //sending to all clients in namespace 'myNamespace', include sender
socket.emit(); //send to all connected clients
socket.broadcast.emit(); //send to all connected clients except the one that sent the message
socket.on(); //event listener, can be called on client to execute on server
io.sockets.socket(); //for emiting to specific clients
io.sockets.emit(); //send to all connected clients (same as socket.emit)
io.sockets.on() ; //initial connection from a client.

希望这可以帮助！。

2020-07-07