JSFiddle - React, Tailwind, and code Playground

by Barry Margolin

HTML

<form name='Tester' method='post' onSubmit='return RegValidate(this);' action='quest.php' >
    <input type='radio' name='w1' value='1'/>1<br>
    <input type='radio' name='w1' value='2'/>2<br>
    <input type='radio' name='w1' value='3'/>3<br>
    <input  name='Submit' value='Tester' type='submit' />
</form>

JavaScript

function RegValidate(Tester) {
    if ($(":radio[name=w1]:checked").toArray().length == 0) {
        alert('nothing selected');
        return false;
    }
}