持续输出clientCount的，在一直刷新
clientCount=1;
console.log(clientCount);
socket.clientNum=clientCount;
clientMap[clientCount]=socket;
if(clientCount%2==1){
socket.emit('waiting','waiting for another person');
}else{
socket.emit('start');
clientMap[(clientCount-1)].emit('start');
}
socket.on('init',function(data){
if(socket.clientNum%2==0){
clientMap[(clientCount-1)].emit('init',data);
}else{
clientMap[(clientCount+1)].emit('init',data);
}
});
socket.on('next',function(data){
if(socket.clientNum%2==0){
clientMap[(clientCount-1)].emit('next',data);
}else{
clientMap[(clientCount+1)].emit('next',data);
}
});
socket.on('disconnect',function(){
});
