How to Check Whether my webpage has radio button or not in Javascript?

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Hi,
I have one web page that contains two radio buttons and few other controls.
So,for that i wrote a function in javascript for validations.If my radio buttons are visible on page it will work fine.

But,For few users those radio buttons should not be visible so, if i kept as Visible false radio buttons are not rendering to page source then other validations are also skipping.So,In this kind of situation i need to check whether my page has radio buttons are not. so How to check my page has radio buttons are not in javascript.

Thanks & Regards
Avinash

Posted 25-Apr-14 20:14pm

Avinash502

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Avinash502 · Accepted Answer · 2014-04-25T20:37:00

C#

var rbtNew = document.getElementById('rbtNew');
 var rbtOld = document.getElementById('rbtOld');

C#

if (rbtNew != null && rbtOld != null) {
                if (rbtNew.checked == false && rbtOld.checked == false) {
                    alert("our Alert Message ");
                    return false;
                }
            }

In the above code rbtNew != null means radio button is exist in page source otherwise it will have null value.