Validating radio button in javascript

The value that will be passed for a specific group when the form is submitted will be the value of the button within the group that is selected at the time that the form is submitted.

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In the case of a checkbox multiple values can be selected so validation is done if none of the checkboxes are ticked.

The desired behavior we want is to have only one button selected at a time; when one button is selected then any previously selected button will be automatically deselected.

The creation of multiple groups of radio buttons for the one form is also straightforward.

A radio button allows the user to select only one option so Javascript should display a message only if none of the radiobuttons are selected.

This is a bit tricky first we need to check if none of the radiobuttons are checked then display a message.

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