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<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>IndexedDB — clear()</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; }
    p { margin: 0 0 1rem; max-width: 440px; }
    .btns { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
    button {
      padding: 0.55rem 1rem;
      font-size: 0.9375rem;
      background: #2563eb;
      color: #fff;
      border: none;
      border-radius: 8px;
      cursor: pointer;
    }
    button.danger { background: #dc2626; }
    button:hover { filter: brightness(1.06); }
    button:disabled { opacity: 0.6; cursor: not-allowed; }
    #status, #count {
      margin-top: 0.5rem;
      padding: 0.75rem 1rem;
      max-width: 440px;
      background: #fff;
      border: 1px solid #e2e8f0;
      border-radius: 8px;
      font-size: 0.875rem;
    }
    #status.ok { border-left: 4px solid #22c55e; }
    #status.warn { border-left: 4px solid #f59e0b; }
    code { background: #e2e8f0; padding: 0.1rem 0.35rem; border-radius: 4px; }
  </style>
</head>
<body>
  <h1>Clear entire store</h1>
  <p><code>clear()</code> removes every record but keeps the object store schema.</p>

  <div class="btns">
    <button type="button" id="seedBtn" disabled>Add 3 sample items</button>
    <button type="button" id="clearBtn" class="danger" disabled>Clear all records</button>
    <button type="button" id="countBtn" disabled>Count records</button>
  </div>

  <p id="status">Opening database&hellip;</p>
  <p id="count" hidden></p>

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

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

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

    openReq.onsuccess = function (event) {
      db = event.target.result;
      statusEl.textContent = 'Ready. Add items, count them, then clear.';
      statusEl.className = 'ok';
      ['seedBtn', 'clearBtn', 'countBtn'].forEach(function (id) {
        document.getElementById(id).disabled = false;
      });
    };

    function showCount() {
      var tx = db.transaction(['items'], 'readonly');
      var countReq = tx.objectStore('items').count();
      countReq.onsuccess = function () {
        countEl.textContent = 'Records in store: ' + countReq.result;
        countEl.hidden = false;
      };
    }

    document.getElementById('seedBtn').addEventListener('click', function () {
      var tx = db.transaction(['items'], 'readwrite');
      var store = tx.objectStore('items');
      ['Apple', 'Banana', 'Cherry'].forEach(function (name) {
        store.add({ name: name });
      });
      tx.oncomplete = function () {
        statusEl.textContent = 'Added 3 items.';
        statusEl.className = 'ok';
        showCount();
      };
    });

    document.getElementById('clearBtn').addEventListener('click', function () {
      var tx = db.transaction(['items'], 'readwrite');
      tx.objectStore('items').clear();
      tx.oncomplete = function () {
        statusEl.textContent = 'All records removed with store.clear().';
        statusEl.className = 'warn';
        showCount();
      };
    });

    document.getElementById('countBtn').addEventListener('click', showCount);
  </script>
</body>
</html>
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IndexedDB DELETE — clear() All Records
