javascript/index.js
//this methods is called when a user leaves the room
this methods is called when a user leaves the room
this methods is called when a user leaves the room
function resp_on_user_disconnected( user_id ){
	 console.log(" user %d leaver",user_id); 
	trigger_room_infor(this);
}
function resp_on_user_disconnected ( user_id ) { console . log ( " user %d leaver" , user_id ) ; trigger_room_infor ( this ) ; }
this methods is called when a user leaves the room
this methods is called when a user leaves the room
//user is gone //update master user in room when a user leave room //this.getRoomInfo( this.roomid, function(room_info) {console.log("inner getRoomInfo callback function ") ;} );