JSFiddle - React, Tailwind, and code Playground

HTML

<title>Test</title>
<body>
<input type="radio" name="pnltype" id="3w" value="3w" onclick=" ClickEvent()" /> 3W
<input type="radio" name="pnltype" id="3w" value="6w" checked onclick=ClickEvent() />  6W
</body>

JavaScript

function ClickEvent()
{
    alert("asd");
    if(document.getElementById('3w').checked) {
      alert(document.getElementById(id).value);
    }
}