如何在JavaScript中存储Firebase数据库的值？

// 引入Firebase SDK
<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>

// 初始化Firebase应用
var 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);

var database = firebase.database();
var ref = database.ref("path/to/data");

ref.set("Hello, Firebase!");

var data = {
  name: "John",
  age: 25,
  email: "john@example.com"
};

ref.set(data);

ref.on("value", function(snapshot) {
  var data = snapshot.val();
  console.log(data);
});