JSFiddle - React, Tailwind, and code Playground

HTML

<textarea style="height: 200px; width: 400px;"></textarea><br />
<button>Copy</button><br />
As .text():<div id="asText"></div>
As .html():<div id="asHtml"></div>

CSS

div { border: solid 1px #555; }

JavaScript

$("button").click(function() {
    var val = $("textarea").val();
    $("#asText").text(val);
    $("#asHtml").html(val);
});