HTML Code
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>IndexedDB — insert from form</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      margin: 0;
      padding: 1.5rem;
      background: #f8fafc;
      color: #334155;
      line-height: 1.6;
    }
    h1 { margin: 0 0 0.5rem; font-size: 1.25rem; color: #0f172a; }
    label { display: block; margin-bottom: 0.35rem; font-size: 0.875rem; font-weight: 600; }
    input {
      display: block;
      width: 100%;
      max-width: 300px;
      padding: 0.5rem 0.65rem;
      margin-bottom: 0.75rem;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      font-size: 1rem;
    }
    button {
      padding: 0.55rem 1rem;
      font-size: 0.9375rem;
      background: #2563eb;
      color: #fff;
      border: none;
      border-radius: 8px;
      cursor: pointer;
    }
    button:hover { background: #1d4ed8; }
    button:disabled { opacity: 0.6; cursor: not-allowed; }
    #status {
      margin-top: 1rem;
      padding: 0.75rem 1rem;
      max-width: 420px;
      background: #fff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      font-size: 0.875rem;
    }
    #status.ok { border-left: 4px solid #22c55e; }
    #status.err { border-left: 4px solid #ef4444; }
  </style>
</head>
<body>
  <h1>Insert from user input</h1>

  <label for="name">Name</label>
  <input type="text" id="name" value="Jordan Kim" placeholder="Full name">

  <label for="email">Email</label>
  <input type="email" id="email" value="jordan@example.com" placeholder="email@example.com">

  <button type="button" id="saveBtn" disabled>Save Contact</button>
  <p id="status">Opening database&hellip;</p>

  <script>
    var statusEl = document.getElementById('status');
    var saveBtn = document.getElementById('saveBtn');
    var db;

    var openReq = indexedDB.open('tryitFormDemo', 1);

    openReq.onupgradeneeded = function (event) {
      event.target.result.createObjectStore('contacts', { keyPath: 'id', autoIncrement: true });
    };

    openReq.onsuccess = function (event) {
      db = event.target.result;
      statusEl.textContent = 'Ready. Fill the form and click Save Contact.';
      statusEl.className = 'ok';
      saveBtn.disabled = false;
    };

    openReq.onerror = function (event) {
      statusEl.textContent = 'Open failed: ' + event.target.error.message;
      statusEl.className = 'err';
    };

    saveBtn.addEventListener('click', function () {
      var name = document.getElementById('name').value.trim();
      var email = document.getElementById('email').value.trim();

      if (!name || !email) {
        statusEl.textContent = 'Please enter both name and email.';
        statusEl.className = 'err';
        return;
      }

      var tx = db.transaction(['contacts'], 'readwrite');
      var store = tx.objectStore('contacts');
      var addReq = store.add({ name: name, email: email });

      addReq.onsuccess = function () {
        statusEl.textContent = 'Saved "' + name + '" with id ' + addReq.result;
        statusEl.className = 'ok';
      };

      addReq.onerror = function (event) {
        statusEl.textContent = 'Save failed: ' + event.target.error.message;
        statusEl.className = 'err';
      };
    });
  </script>
</body>
</html>
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IndexedDB INSERT — Add from Form Input
