HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>onreset — dynamic handler</title>

  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}form{max-width:420px;padding:1rem;background:#fff;border:1px solid #e2e8f0;border-radius:8px}label{display:block;margin-bottom:.25rem;font-weight:600;font-size:.875rem}input[type=email],input[type=text]{width:100%;padding:.5rem .75rem;margin-bottom:.75rem;border:1px solid #cbd5e1;border-radius:6px;box-sizing:border-box}.actions{display:flex;gap:.5rem}input[type=reset],input[type=submit]{padding:.5rem 1rem;border:1px solid #cbd5e1;border-radius:6px;background:#fff;cursor:pointer}#log{margin-top:.75rem;padding:.75rem 1rem;border-radius:8px;font-size:.875rem;max-width:420px;background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}</style>

</head>

<body>

  <h1>form.onreset</h1>

  <p>Handler assigned in script — click Reset Form.</p>

  <form id=dynamicForm onsubmit=event.preventDefault()>

    <label for=name>Name</label>

    <input id=name name=name>

    <label for=email>Email</label>

    <input type=email id=email name=email>

    <div class=actions>

      <input type=submit value=Submit>

      <input type=reset value="Reset Form">

    </div>

  </form>

  <div id=log>Waiting for reset…</div>



  <script>document.getElementById("dynamicForm").onreset=function(){document.getElementById("log").textContent="This form is being reset!",document.getElementById("log").style.background="#fef3c7",document.getElementById("log").style.borderColor="#fde68a",document.getElementById("log").style.color="#92400e"}</script>

</body>

</html>

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HTML onreset Attribute — dynamic assignment