如何在web上使用Firebase进行查找和删除

<script src="https://www.gstatic.com/firebasejs/9.0.2/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/9.0.2/firebase-database.js"></script>

const firebaseConfig = {
  apiKey: "YOUR_API_KEY",
  authDomain: "YOUR_AUTH_DOMAIN",
  databaseURL: "YOUR_DATABASE_URL",
  projectId: "YOUR_PROJECT_ID",
  storageBucket: "YOUR_STORAGE_BUCKET",
  messagingSenderId: "YOUR_MESSAGING_SENDER_ID",
  appId: "YOUR_APP_ID"
};

firebase.initializeApp(firebaseConfig);

const database = firebase.database();

const usersRef = database.ref("users");
usersRef.orderByChild("name").equalTo("John").once("value", (snapshot) => {
  snapshot.forEach((childSnapshot) => {
    const user = childSnapshot.val();
    console.log(user);
  });
});

const usersRef = database.ref("users");
usersRef.orderByChild("name").equalTo("John").once("value", (snapshot) => {
  snapshot.forEach((childSnapshot) => {
    const userKey = childSnapshot.key;
    usersRef.child(userKey).remove();
  });
});