Adding validations to see if radio button is not selected

Question

I have the following code:

 
1. question 1

     Strongly         


        

Answer 1

You should use logical operator && for your condition

if ( (thisfrm.question3[0].checked == false) && 
     (thisfrm.question3[1].checked == false) && 
     (thisfrm.question3[2].checked == false) && 
     (thisfrm.question3[3].checked == false) && 
     (thisfrm.question3[4].checked == false) )