代码示例:(标识:jsck_node_removechild_2)
<!DOCTYPE html>
<html>
<body>
<h1>Element 对象</h1>

<h2>removeChild() 方法</h2>

<p>单击“删除”可删除第一个子项(索引 0)</p>

<button onclick="myFunction()">删除</button>

<ul id="myList">
  <li>Coffee</li>
  <li>Tea</li>
  <li>Milk</li>
</ul>


<script>
function myFunction() {
  const list = document.getElementById("myList");
  if (list.hasChildNodes()) {
    list.removeChild(list.children[0]);
  }
}
</script>

</body>
</html>
运行结果: