Firebase .childAdded观察器正在复制子对象

const database = firebase.database();
const ref = database.ref('your-reference-path');

ref.on('childAdded', (snapshot) => {
  const newData = snapshot.val();
  console.log('New data added:', newData);
  // 处理新添加的数据，不要复制子对象
});

// 初始化Firebase
firebase.initializeApp({
  apiKey: 'YOUR_API_KEY',
  databaseURL: 'YOUR_DATABASE_URL',
  projectId: 'YOUR_PROJECT_ID',
  storageBucket: 'YOUR_STORAGE_BUCKET',
  messagingSenderId: 'YOUR_MESSAGING_SENDER_ID',
  appId: 'YOUR_APP_ID'
});

// 获取数据库引用
const database = firebase.database();
const ref = database.ref('your-reference-path');

// 监听.childAdded事件
ref.on('childAdded', (snapshot) => {
  const newData = snapshot.val();
  console.log('New data added:', newData);
  // 处理新添加的数据，不要复制子对象
});