HTML Code

<!DOCTYPE html>



<html lang=en>



<head>



  <meta charset=UTF-8>



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



  <title>novalidate — form submit</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}label{display:block;margin:.75rem 0 .35rem;font-weight:500;font-size:.875rem}input{width:100%;max-width:320px;padding:.5rem .65rem;font:inherit;border:1px solid #cbd5e1;border-radius:6px}button{margin-top:1rem;padding:.5rem 1rem;font:inherit;cursor:pointer;border-radius:6px;border:1px solid #1d4ed8;background:#2563eb;color:#fff}.result{margin-top:1rem;padding:.75rem 1rem;background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;font-size:.8125rem;max-width:420px}code{background:#e2e8f0;padding:.1rem .35rem;border-radius:4px}</style>



</head>



<body>



  <h1>Form with novalidate</h1>



  <p>Fields are <code>required</code>, but <code>novalidate</code> skips browser checks on submit.</p>







  <form id=demo novalidate>



    <label for=username>Username (required):</label>



    <input id=username name=username required>







    <label for=email>Email (required):</label>



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







    <button type=submit>Submit without browser validation</button>



  </form>



  <div class=result id=result>Leave fields empty and submit — the form still submits because of <code>novalidate</code>.</div>







  <script>document.getElementById("demo").addEventListener("submit",(function(e){e.preventDefault(),document.getElementById("result").textContent="Submitted! Browser did not block empty required fields because novalidate is set."}))</script>



</body>



</html>

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HTML novalidate Attribute — Skip Browser Validation