<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script type="text/javascript" language="javascript"> function test() { var rad = document.getElementById("radio1"); var rad2 = document.getElementById("radio2"); if (rad.checked == false && rad2.checked == false) { alert("Please Select atleast one option"); } }</script> </head> <body> <form id="form1" runat="server"> <div> <input type="radio" id="radio1" name="radio1" value="1" /> Value 1 <input type="radio" id="radio2" name="radio1" value="2" /> Value 2 <input type="button" id="btnClick" onclick="test()" value="ClickMe" /> </div> </form> </body> </html>
Login to post response