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    <h1>Hello World!</h1>
      <span id="elButton">
        <button>Click me</button>
  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Vitae vero illo ut quae, nam nostrum officiis inventore iusto amet sed dolores voluptate possimus vel illum maiores tempore harum ipsum quisquam.</p>
  <p>Nesciunt necessitatibus ut error eveniet repellendus, dignissimos provident aliquid laborum obcaecati laudantium itaque rem corrupti nihil natus? Vitae exercitationem iure illum illo saepe fuga molestias ut quod, dolore laudantium. Cumque?</p>
  <p>Consequatur illo tempore placeat a, eum officiis rem deserunt pariatur est, vero explicabo provident sint commodi nisi at incidunt ut quam voluptatibus perspiciatis quo harum possimus, perferendis neque ad? Nobis!</p>




                elButton.onclick = (v) => console.log('composedPath', v.composedPath());