JSFiddle - React, Tailwind, and code Playground

HTML

<BODY>
    <button onclick="startPrinting()">Generate random numbers</button>
    <pre id="container"></pre>
</BODY>

CSS

#container {
    border: 1px solid black;
}

JavaScript

function startPrinting() {
    var b = document.getElementById('container');

    b.innerHTML = 'The following are some random numbers.<br />';

    for (var i = 1; i < 10; i++) {

        b.innerHTML += '\n';

        b.innerHTML += i + '.' + Math.floor(Math.random() * 1000);
    }
}