JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="insert" style="width:600px; height:80%;"></textarea>
<input id="execute" name="execute" type="submit" value="Execute">

<div id="processado" class="teste" style="display:none;">
</div>
<div id="result"><b>RESULTADO:</b>
  <br>
</div>

JavaScript

$(document).ready(function() {
  function execute() {
    var conteudo = $('#insert').val();
		var buffer = $('<div/>');
		
    buffer.html(conteudo);
		var urls = $('[href], [src]', buffer).map(function(index, item) {
      return this.href || this.src;
    }).get();
    $('#result').html(JSON.stringify(urls));
  }
  $('#execute').click(execute);
});