JSFiddle - React, Tailwind, and code Playground

HTML

<form>
<table>
<tr><td align=center><input type="checkbox" name="agree" id="agree"></td></tr>I agree Terms and Conditions
<tr><td align=center><input type="submit" name="submit" id="submit" value="submit" disabled></td></tr>
</form>

JavaScript

$(function() {
  $('#agree').click(function() {
    var satisfied = $('#agree:checked').val();
    if (satisfied != undefined) $('#submit').removeAttr('disabled');
    else $('#submit').attr('disabled', 'disabled');
  });
});