问Firebase只有在包含给定数据时才存储密钥--javascript / jquery

EN

var MyFirebase = data.val();
var keys = object.keys(MyFirebase); // This line gets all the keys in the table
// This loops through the keys
for (var i = 0; i < keys.length; i++){ 
    var key  = keys[i];
    var author = MyFirebase[key].author;
    var jokeText= MyFirebase[key].jokeText;
    var votes= MyFirebase[key].votes;

// Now I want to carry out a if statement, that checks if given text is inside that id

IF jokeText == "HAHA" && author == "test"
   getID = getParentID
     IF getID IS parent of "HAHA" && "test" 
        DOsomething
ELSE
  DOsomethingELSE

} // end for loop