JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<body>

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

<button onclick="loadFrame();">
Change content
</button>

</body>
</html>

JavaScript

function loadFrame() {
      x = document.getElementById('iframe').contentWindow;
      x.document.write("<html><body>Put content here</body></html>");
    }