<!DOCTYPE html> <html> <body> <!-- 这是注释节点 --> <h1>Element 对象</h1> <h2>childNodes 属性</h2> <p>元素之间的空白是文本节点。注释也是节点。</p> <p>body 元素的子节点是:</p> <p id="demo"></p> <script> const nodeList = document.body.childNodes; let text = ""; for (let i = 0; i < nodeList.length; i++) { text += nodeList[i].nodeName + "<br>"; } document.getElementById("demo").innerHTML = text; </script> </body> </html>