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Which validation is used for radio button?
Setup Radio Button Validation
It will return the value of the button within the group that is selected, or return a null value if no button in the group is selected. For example, here is the code that will perform the radio button validation: var btn = valButton(form. group1);
How to validate multiple radio button in JavaScript?
What you should do is set up two variables, both of them serving as boolean flags. Then loop through each set of radio buttons in order to determine if a button has been selected. If so, set the corresponding flag to true, otherwise false. Then at the end, test to see if both flags have been set to true.
