function bindDataToElement(data) {
  const proxy = new Proxy(data, {
    set(target, key, value) {
      target[key] = value;
      return true;
    },
  });

  console.log("proxy", proxy);
}

window.onload = () => {
  const data = { name: "张三", age: 20 };
  bindDataToElement(data);
};