JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Input</h1>
<textarea id='Template' style="width: 98%;">
    <p>Hello World !!</p>
</textarea>
<h1>Output</h1>
<iframe id="TemplateView" style="width: 98%;"></iframe>

JavaScript

$(function() {
    var template = $('#Template'),
        view = $('#TemplateView'),
        update = function() {
            view.contents().find('html').html(template.val());
        };

    $(template ).on('keyup change', update);
    update();
});