x
 
<!DOCTYPE html>
<html>
<body>
<h3>如何访问 DL 元素的演示</h3>
<dl id="myDL">
  <dt>Coffee</dt>
  <dd>Black hot drink</dd>
  <dt>Milk</dt>
  <dd>White cold drink</dd>
</dl>
<p>单击按钮可获取 dl 元素的 HTML 内容。</p>
<button onclick="myFunction()">试一试</button>
<p id="demo"></p>
<script>
function myFunction() {
  var x = document.getElementById("myDL").innerHTML;
  document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>