点击运行
<html> <head> <script type="text/javascript"> function getType() { alert(document.getElementById("mySelect").type) } </script> </head> <body> <form> <select id="mySelect"> <option>Apple</option> <option>Pear</option> <option>Banana</option> <option>Orange</option> </select> <input type="button" onclick="getType()" value="Alert type of dropdown list"> </form> </body> </html>
运行结果
