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<!DOCTYPE html> <html> <body> <p>示例列表：</p> <ul> <li id="myLI">咖啡</li> <li>茶</li> </ul> <p>点击按钮获取列表中li元素的父节点的节点名称。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myLI").parentNode.nodeName; document.getElementById("demo").innerHTML = x; } </script> </body> </html>