为什么在浏览器中未定义socket.id [英] why is socket.id undefined in the browser

问题描述

如果我执行console.log(socket)，则会在Firebug中获得一个套接字对象.在obj中，我可以看到带有id的属性，并且可以看到id的值.但是当我做console.log(socket.id)时，我变得不确定.为什么?

If i do console.log(socket) i get a socket object in firebug. In the obj I could see a property with id and i could see the value of the id. But when I do console.log(socket.id) i get undefined. why?

   var socket = io();
    $(document).ready( function(){
        console.log(socket);
        console.log(socket.id);
        console.log(socket.ids);
        $(".click").on("click", function(e){
            alert("clicked")
            socket.emit("clicked", socket.id)
            $(this).addClass("removeclick");
        })
     });

ps我可以得到socket.ids，它是0，但不是socket.id.

ps I could get socket.ids which is 0 but not socket.id.

推荐答案

Socket.io需要一些时间来建立连接.我发现在客户端获取ID的最好方法是:

Socket.io needs some time for establish the connection. The best way I found to get ID on client-side is:

socket.on('connect', () => {console.log(socket.id)});

'connect'是系统事件，当连接就绪时发出.

'connect' is system event which emitting when connection is ready.

(我当前的socket.io版本是1.7.2)

(my current socket.io version is 1.7.2)

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