JSFiddle - React, Tailwind, and code Playground

HTML

<form method="POST" action="/echo/html/?html=;delay=3;">
<input name="show[1]" type="radio" value="1" /> Show<br>
<input name="show[1]" type="radio" value="0" /> Hide<br>

<input name="show[2]" type="radio" value="1" /> Show<br>
<input name="show[2]" type="radio" value="0" /> Hide<br>

<input name="show[n]" type="radio" value="1" /> Show<br>
<input name="show[n]" type="radio" value="0" /> Hide<br>

<button type="submit">Submit form</button>
</form>

JavaScript

$("form").submit(function() {
    var submitme = true;
    $(':radio').each(function() {
        nam = $(this).attr('name');
        if (submitme && !$(':radio[name="'+nam+'"]:checked').length) {
            alert(nam+' group not checked');
            submitme = false;
        }
    });
    return submitme;
});