JSFiddle - React, Tailwind, and code Playground

HTML

<form method="post" action="register2.php">Please verify that you are human below...
    <br/> <span id="num1"></span> X
    <input id="num2" style="width:20px" /> equals <span id="answer"></span>

    <br>
    <input id="submit" type="submit" value="Register" disabled="disabled" />
</form>

JavaScript

$('#submit').attr("disabled", "disabled");

var num1 = Math.floor((Math.random() * 11));
var num2 = Math.floor((Math.random() * 11));
var answer = num1 * num2;

$('#num1').html(num1);
$('#answer').html(answer);