socket.io发出回调不在服务器端触发？

Question

io.sockets.emit('delete hint', {id: id}, function(data){
                    console.log('callback');
                });

socket.on('delete hint', function(data){
    // display a message before deleting
    $('#' + data.id).fadeOut(function(){ 
        $(this).remove();
    });
});

我正在使用windows，当socket.io发出事件时，命令提示符显示以下内容：

websocket writing 5:::{"name":"delete hint", "args":[{"id":"1"}, null]}

我想不出问题出在哪里，我做错了什么？

Answer 1

当接收方计算机调用时，在发送方计算机上执行回调

看一下这段代码：

服务器：

io.sockets.on('connection', connectionFunc);

function connectionFunc (socket) {
    socket.emit('delete hint', "data for client", callThis);
}

//this function is executed when client calls it
function callThis (dataFromClient){

    console.log("Call back fired: " + dataFromClient);
}

    socket.on('delete hint', function(data, callback) {

        console.log("i received: "+ data);
        // call back will fire only when u the next line runs
        callback("the callThis function on server will run");            

    });