W3School TIY
编辑您的代码：
<html> <head> <script type="text/javascript"> function alertId() { var txt="Id: " + document.getElementById("male").id txt=txt + ", type: " + document.getElementById("male").type txt=txt + ", value: " + document.getElementById("male").value alert(txt) } </script> </head> <body> <form> Male: <input id="male" type="radio" name="Sex" value="Male" /> <br /> Female: <input id="female" type="radio" name="Sex" value="Female" /> <br /><br /> <input type="button" value="Alert details" onclick="alertId()" /> </form> </body> </html>
查看结果: