51help TIY
码：
<html> <body> <form id="myForm"> <select id="mySelect"> <option>苹果</option> <option>桃子</option> <option>香蕉</option> <option>桔子</option> </select> </form> <p>该表单的 id 是： <script type="text/javascript"> document.write(document.getElementById("mySelect").form.id) </script> </p> </body> </html>
查看结果: