HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>type correct</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 420px; }
    p { margin: 0 0 10px; color: #2563eb; font-weight: 600; min-height: 1.4em; }
    input { width: 100%; padding: 10px 12px; border: 2px solid #cbd5e1; border-radius: 6px; font-size: 16px; box-sizing: border-box; margin-bottom: 10px; }
    button { padding: 10px 16px; background: #6366f1; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
    .hint { color: #64748b; font-size: 14px; margin-bottom: 12px; }
    span.msg { color: #dc2626; font-weight: 600; }
  </style>
</head>
<body>
  <p class="hint">Type <strong>correct</strong> to validate:</p>
  <form>
    <input type="text" placeholder="Type here">
    <br><br>
    <button type="submit">Submit</button>
    <span class="msg"></span>
  </form>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("form").on("submit", function(event) {
      if ($("input").first().val() === "correct") {
        $("span.msg").css("color", "#16a34a").text("Validated...").show();
        return;
      }
      $("span.msg").css("color", "#dc2626").text("Not valid!").show().fadeOut(1000);
      event.preventDefault();
    });
  </script>
</body>
</html>

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jQuery submit event — type correct validation (Try It)