<div id="input"> **bold** and <em>italic</em> - <https://example.com> - <https://example.net> </div> <script src="https://unpkg.com/commonmark@0.29.3/dist/commonmark.js"></script> <script> window.onload = function() { var markdown = document.querySelector('#input').innerHTML; var reader = new commonmark.Parser(); var writer = new commonmark.HtmlRenderer(); var parsed = reader.parse(markdown); var result = writer.render(parsed); document.querySelector('body').innerHTML = result; } </script> Ou...