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+---
+title: WindowOrWorkerGlobalScope.indexedDB
+slug: Web/API/indexedDB
+tags:
+  - API
+  - Database
+  - IndexedDB
+  - Reference
+  - Storage
+  - WindowOrWorkerGlobalScope
+  - 参考
+  - 属性
+translation_of: Web/API/WindowOrWorkerGlobalScope/indexedDB
+original_slug: Web/API/WindowOrWorkerGlobalScope/indexedDB
+---
+<p>{{ APIRef() }}</p>
+
+<p><strong><code>indexedDB</code></strong> 是 {{domxref("WindowOrWorkerGlobalScope")}}的一个只读属性，它集成了为应用程序提供异步访问索引数据库的功能的机制。.</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">var IDBFactory = self.indexedDB;</pre>
+
+<div class="twocolumns">
+<h2 id="值">值</h2>
+</div>
+
+<p>一个 {{domxref("IDBFactory")}} 对象.</p>
+
+<p id="示例">示例</p>
+
+<pre class="brush: js;highlight:[3]">var db;
+function openDB() {
+ var DBOpenRequest = window.indexedDB.open('toDoList');
+ DBOpenRequest.onsuccess = function(e) {
+   db = DBOpenRequest.result;
+ }
+}</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('IndexedDB 2', '#dom-windoworworkerglobalscope-indexeddb', 'indexedDB')}}</td>
+   <td>{{Spec2('IndexedDB 2')}}</td>
+   <td>Defined in a <code>WindowOrWorkerGlobalScope</code> partial in the newest spec.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('IndexedDB', '#widl-IDBEnvironment-indexedDB', 'indexedDB')}}</td>
+   <td>{{Spec2('IndexedDB')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Edge</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari (WebKit)</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>23{{property_prefix("webkit")}}<br>
+    24</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>10 {{property_prefix("moz")}}<br>
+    {{CompatGeckoDesktop("16.0")}}<br>
+    {{CompatGeckoDesktop("52.0")}}<sup>[1]</sup></td>
+   <td>10, partial</td>
+   <td>15</td>
+   <td>7.1</td>
+  </tr>
+  <tr>
+   <td>Available in workers</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatGeckoMobile("37.0")}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+  <tr>
+   <td>Indexed Database 2.0</td>
+   <td>{{CompatChrome(58)}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatOpera(45)}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android Webview</th>
+   <th>Chrome for Android</th>
+   <th>Edge</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>Firefox OS</th>
+   <th>IE Phone</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatGeckoMobile("22.0")}}<br>
+    {{CompatGeckoMobile("52.0")}}<sup>[1]</sup></td>
+   <td>1.0.1</td>
+   <td>10</td>
+   <td>22</td>
+   <td>8</td>
+  </tr>
+  <tr>
+   <td>Available in workers</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatGeckoMobile("37.0")}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+  <tr>
+   <td>Indexed Database 2.0</td>
+   <td>{{CompatChrome(58)}}</td>
+   <td>{{CompatChrome(58)}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatUnknown}}</td>
+   <td>{{CompatOperaMobile(45)}}</td>
+   <td>{{CompatUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<p>[1] <code>indexedDB</code> 定义在 {{domxref("WindowOrWorkerGlobalScope")}} mixin（一种实现多继承的方法）上.</p>
+
+<h2 id="相关链接">相关链接</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/API/IndexedDB_API/Using_IndexedDB">Using IndexedDB</a></li>
+ <li>Starting transactions: {{domxref("IDBDatabase")}}</li>
+ <li>Using transactions: {{domxref("IDBTransaction")}}</li>
+ <li>Setting a range of keys: {{domxref("IDBKeyRange")}}</li>
+ <li>Retrieving and making changes to your data: {{domxref("IDBObjectStore")}}</li>
+ <li>Using cursors: {{domxref("IDBCursor")}}</li>
+ <li>Reference example: <a class="external" href="https://github.com/mdn/to-do-notifications/tree/gh-pages">To-do Notifications</a> (<a class="external" href="http://mdn.github.io/to-do-notifications/">view example live</a>.)</li>
+</ul>