JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="code"><script>alert('Boo!');</script></textarea>

 <iframe id="output"></iframe>

 <button id="submit-b">submit</button>

JavaScript

$("#submit-b").click(function(){
   code = $("#code").val();
   $('#output').contents().find('body').html(code);
});