<!DOCTYPE html> <html> <body> <h1>Element 对象</h1> <h2>childNodes 属性</h2> <select id="mySelect" style="width:100px" size="5"><option>Audi</option><option>BMW</option><option>Saab</option><option>Volvo</option></select> <p>select 元素的第三个子节点的文本是:</p> <p id="demo"></p> <script> let text = document.getElementById("mySelect").childNodes[2].text; document.getElementById("demo").innerHTML = text; </script> </body> </html>