js获取父元素的值

// 假设HTML结构如下：
// <div id="parent">
//   <button id="child">Click me</button>
// </div>

const childElement = document.getElementById('child');
const parentElement = childElement.parentNode;

console.log(parentElement.id); // 输出 "parent"

const parentText = parentElement.textContent;
console.log(parentText); // 输出父元素的文本内容

<!-- 假设HTML结构如下 -->
<div id="parent" data-info="some information">
  <button id="child">Click me</button>
</div>

const parentInfo = parentElement.getAttribute('data-info');
console.log(parentInfo); // 输出 "some information"

document.addEventListener('DOMContentLoaded', function() {
  const childElement = document.getElementById('child');
  const parentElement = childElement.parentNode;
  console.log(parentElement.id);
});