HTML Code
<!DOCTYPE html>
<html lang=en>
<head>
  <meta charset=UTF-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>dialog Form Example</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 1rem;font-size:1.25rem;color:#0f172a}.open-btn{padding:.5rem 1rem;border:none;border-radius:6px;background:#2563eb;color:#fff;cursor:pointer;font:inherit}dialog{border:none;border-radius:12px;padding:1.5rem;width:min(360px,92vw);box-shadow:0 20px 40px rgba(15,23,42,.2)}dialog::backdrop{background:rgba(15,23,42,.4)}dialog h2{margin:0 0 1rem;font-size:1.1rem;color:#0f172a}label{display:block;margin-bottom:.35rem;font-size:.875rem;font-weight:600;color:#475569}input{width:100%;padding:.5rem .65rem;margin-bottom:.85rem;border:1px solid #cbd5e1;border-radius:6px;font:inherit;box-sizing:border-box}.actions{display:flex;gap:.5rem;justify-content:flex-end}.actions button{padding:.45rem .9rem;border:none;border-radius:6px;cursor:pointer;font:inherit}.cancel{background:#e2e8f0;color:#334155}.submit{background:#16a34a;color:#fff}</style>
</head>
<body>
  <h1>Dialog with form</h1>
  <button type=button class=open-btn id=openFormBtn>Sign up</button>

  <dialog id=signupDialog>
    <h2>Create account</h2>
    <form method=dialog id=signupForm>
      <label for=name>Name</label>
      <input id=name name=name required>

      <label for=email>Email</label>
      <input type=email id=email name=email required>

      <div class=actions>
        <button type=submit class=cancel value=cancel>Cancel</button>
        <button type=submit class=submit value=save>Save</button>
      </div>
    </form>
  </dialog>

  <script>const dialog=document.getElementById("signupDialog");document.getElementById("openFormBtn").addEventListener("click",()=>{dialog.showModal()}),dialog.addEventListener("close",()=>{if("save"===dialog.returnValue){const e=new FormData(document.getElementById("signupForm"));alert("Saved: "+e.get("name"))}})</script>
</body>
</html>
Lines: 0 | Characters: 0
Live Preview Auto-refresh on Run
Form Inside a dialog
