HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>skip if visible</title>
  <style>
    body { font-family: sans-serif; margin: 1rem; }
    #target { margin-top: 40vh; padding: 1rem; background: #fef08a; border-radius: 8px; width: fit-content; }
    button { margin-top: 1rem; padding: 0.5rem 1rem; cursor: pointer; }
    pre { background: #f1f5f9; padding: 0.5rem; border-radius: 4px; }
  </style>
</head>
<body>
  <div id="target">I am already on screen</div>
  <button type="button" id="test">scrollIntoViewIfNeeded()</button>
  <pre id="out">Click the button</pre>
  <script>
    document.getElementById("test").addEventListener("click", function () {
      var target = document.getElementById("target");
      var before = window.scrollY;
      if (typeof target.scrollIntoViewIfNeeded === "function") {
        target.scrollIntoViewIfNeeded();
        var after = window.scrollY;
        document.getElementById("out").textContent =
          before === after ? "No scroll — already visible (MDN)" : "Scrolled from " + before + " to " + after;
      } else {
        document.getElementById("out").textContent = "Method not supported here.";
      }
    });
  </script>
</body>
</html>

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Element.scrollIntoViewIfNeeded — skip if visible (Try It)