HTMLTextAreaElement: select event

addEventListener("select", (event) => { })
onselect = (event) => { }

<textarea>Try selecting some text in this element.</textarea>
<p id="log"></p>

function logSelection(event) {
  const log = document.getElementById("log");
  const selection = event.target.value.substring(
    event.target.selectionStart,
    event.target.selectionEnd,
  );
  log.textContent = `You selected: ${selection}`;
}
const textarea = document.querySelector("textarea");
textarea.addEventListener("select", logSelection);

textarea.onselect = logSelection;