HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>stopPropagation same element</title>
</head>
<body>
  <div id="parent">
    <button id="btn" type="button">Click me</button>
  </div>
  <pre id="out">Waiting...</pre>
  <script>
    var btn = document.getElementById("btn");
    var parent = document.getElementById("parent");
    var out = document.getElementById("out");

    btn.addEventListener("click", function (e) {
      out.textContent = "1\n";
      e.stopPropagation();
    });
    btn.addEventListener("click", function () {
      out.textContent += "2\n";
    });
    btn.addEventListener("click", function () {
      out.textContent += "3\n";
    });
    parent.addEventListener("click", function () {
      out.textContent += "parent\n";
    });
  </script>
</body>
</html>

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Event.stopPropagation() — same-element listeners (Try It)