how to delete node from firebase using html button and javascript function

This is my current web data:

i can't call my javascript function for delete(). because my button are append in html. my onclick aren't working

var query = firebase.database().ref("Feedback").orderByKey();
query.once("value")
    .then(function(snapshot) {
        snapshot.forEach(function(feedbackSnapshot) {
           var uid = feedbackSnapshot.key;
            feedbackSnapshot.forEach(function(childSnapshot) {
                var key = childSnapshot.key;
                var TicketNo = childSnapshot.child("feedID").val();
                var Subject = childSnapshot.child("feedSubject").val();
                var Message = childSnapshot.child("feedMessage").val();
                var deleteRef = "Delete(key,uid)";

                $("#feedback_table").append(
                    "<tr><td>"+Message+"</td><td>"+Subject+"</td><td>"+TicketNo
                    +"</td><td><button onclick="+deleteRef+">Remove</button></td><td style='display:none;'>"+uid
                    +"</td><td style='display:none;'>"+key+"</td></tr>");
            });
    });
});

this is my delete function :

  function Delete(key,uid){
      var feedRef = firebase.database.ref("Feedback").child(uid).child(key);
      feedRef.remove()
      .then(function(){
        console.log("Remove succeeded.")
      })
      .catch(function(error){
        console.log("Remove Failed!"+error.message)
      });
  }