HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>trigger foo click demo</title>
  <style>
    body { font-family: sans-serif; padding: 16px; }
    #foo { padding: 12px 20px; background: #3b82f6; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
    #log { margin-top: 14px; color: #1d4ed8; font-weight: bold; max-width: 400px; }
  </style>
</head>
<body>
  <button type="button" id="foo">Hello from #foo</button>
  <div id="log">Handler fired on page load via trigger("click").</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    var count = 0;
    $("#foo").on("click", function() {
      count++;
      $("#log").text("Handler ran " + count + " time(s). Text: " + $(this).text());
    });
    $("#foo").trigger("click");
  </script>
</body>
</html>

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jQuery #foo.trigger('click') — bind then trigger (Try It)