如何在css类或div文本内容发生更改时获取更新的html()

// 目标元素的选择器
const targetSelector = '.target-div';

// 创建MutationObserver实例
const observer = new MutationObserver((mutationsList) => {
  for (let mutation of mutationsList) {
    if (mutation.type === 'attributes' && mutation.attributeName === 'class') {
      // CSS类发生变化
      const targetElement = mutation.target;
      const updatedHtml = targetElement.innerHTML;
      console.log(updatedHtml);
    }
  }
});

// 监听目标元素的属性变化
const targetElement = document.querySelector(targetSelector);
observer.observe(targetElement, { attributes: true });

// 示例：修改目标元素的CSS类
setTimeout(() => {
  targetElement.classList.add('new-class');
}, 2000);