JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="ruhuman" class="ruhuman" onclick="check()" required="required">
<label>R U Human?</label>

JavaScript

var input = document.getElementById('ruhuman');
var ruhuman = 
{
  checked: false
};

function check() 
{
  if (input.checked) 
  {
    ruhuman.checked = true;
  }
  alert(ruhuman.checked);
}

input.onchange = check;
check();