Socket.io＆gt;从服务器调用客户端功能？

Question

我正在尝试使用socket.io从节点服务器在客户端执行函数。数据到达客户端没问题，但我无法在连接上执行功能。

我的服务器代码（循环发出）：

var io = require('socket.io')(server);
io.on('connection', function(client){
    setInterval(function(){
        client.emit('for_client', datatosend);
    }, 100);
});

我的客户端代码：

socket.on('for_client', function (data) {

    console.log(data);

    switch(true) {
        case (data == "reload"):
            console.log('DO reload');  //<<< not working
            break;

        case (data == "switch"):
            console.log('DO switch');  //<<< not working
            break;

        default:
            console.log(data);  //<<< this DOES work
    }

});

这是证明数据正在通过的证据;）

非常感谢任何帮助。

Answer 1

你的转换声明正在捣乱它。你应该

switch(data) {
    case "reload":
        console.log('DO reload');
        break;

    case "switch":
        console.log('DO switch');
        break;

    default:
        console.log(data);  
}

Answer 2

//comparison operator in the switch " "==> it get the data as string  below method worked for me just normal comparison
switch(true) {
    case data == reload:
        console.log('DO reload');  //will work just test
        break;

    case data == switch:
        console.log('DO switch');  ///working
        break;

    default:
        console.log(data);  //<<< this DOES work
}