单击按钮即可从 firebase 实时数据库中删除条目

Question

I need help on how to remove a firebase entry

I have the following code in the javascript:

document.getElementById('deleteDriver_btn').onclick = function() {
     firebase.database().ref('drivers').child('driver_num').on('value', function(driverSnapshot) {
     var driverChildSnapshot = driverSnapshot.val();
     var queryRef = firebase.database().ref('drivers').orderByChild('driver_num').equalTo(dataRow);
               queryRef.remove();
     });
};

I get an error saying that queryRef.remove() is not a function.

Firebase entry goes like:

---driver
     --AKSJDIWDKSADKAWsdak <---- want to delete this and the data underneath
         -driver_num
         -first_name
         -last_name
     --akdjwoajdksafksndjiw <---- want to retain this
         -driver_num
         -first_name
         -last_name

Answer 1

Okay I found my answer thanks to the hint @TommyBs sent about the references. I just query to extract the key and then initiate .ref().remove()

document.getElementById('deleteDriver_btn').onclick = function() {
       var refe = firebase.database().ref("drivers");
       var diskey = "";

       refe.orderByChild("driver_num").equalTo(dataRow).on("child_added", function(snapshots) 
            {
                diskey = snapshots.key;
            });
       firebase.database().ref("drivers/" + diskey).remove();
};