socket.io 删除特定的监听器 [英] socket.io Removing specific listener

问题描述

我使用的是 Socket.io v0.9.16 和铬 34

I'm using Socket.io v0.9.16 and Chrome 34

我正在尝试删除特定的侦听器，或取消订阅特定的订阅

I'm trying to remove a specific listener, or unsubscribe from a specific subscription

像这样:

socket.on('testComplete',function(data){
    console.log('test complete',data);
}); 

function emitTest(){
    console.log('emitting test');
    socket.emit('test','first emit');
}

function removeListener(){
    socket.removeListener('testComplete');
}

如果我调用 emitTest 函数，然后调用 removeListener 函数，当我调用 'test complete' 时，我仍然看到 'test complete' 消息再次代码>emitTest.监听器应该已经被移除，如果套接字函数甚至可以工作.

If I call the emitTest function, and then the removeListener function, I still see the 'test complete' message when I call emitTest again. The listener should have been removed, if the socket function even works.

我正在寻找一种方法来删除实际有效的特定侦听器.

I'm looking for a way to remove a specific listener that actually works.

这个答案说 removeListener 不起作用.

This answer says that removeListener doesn't work.

这样做有什么缺点吗:

socket.removeListener=function(name){
        if(socket.$events.hasOwnProperty(name)){
            delete socket.$events[name];
        }
    };

我将一个答案标记为正确，但我在代码中使用了上述内容，因为它更适合我的设计.

I marked an answer as correct, but I'm using the above in my code since it works better with my design.

推荐答案

//To unsubscribe all listeners of an event
socket.off('event-name');

//to unsubscribe a certain listener
socket.off('event-name', listener);

注意socket.off、socket.removeListener、socket.removeAllListeners、socket.removeEventListener是同义词.

这是在 socket.io v1.4.3 上测试的

This is tested on socket.io v1.4.3

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