替代jQuery livequery插件？

// 创建一个回调函数，当DOM发生变化时会被调用
const callback = function (mutationsList, observer) {
  for (const mutation of mutationsList) {
    if (mutation.type === 'childList') {
      console.log('A child node has been added or removed.');
    }
  }
};

// 创建一个观察器实例，并将回调函数作为参数传递
const observer = new MutationObserver(callback);

// 选择要观察的DOM元素
const targetNode = document.getElementById('some-element');

// 配置观察器选项
const config = { childList: true, subtree: true };

// 开始观察目标元素
observer.observe(targetNode, config);

// 随时停止观察
observer.disconnect();