W3School TIY
编辑您的代码：
<html> <head> <script type="text/javascript"> function disable() { document.getElementById("mySelect").disabled=true } function enable() { document.getElementById("mySelect").disabled=false } </script> </head> <body> <form> <select id="mySelect"> <option>苹果</option> <option>桃子</option> <option>香蕉</option> <option>桔子</option> </select> <br /><br /> <input type="button" onclick="disable()" value="禁用列表"> <input type="button" onclick="enable()" value="启用列表"> </form> </body> </html>
查看结果: