From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: StorageManager.persisted()
+slug: Web/API/StorageManager/persisted
+translation_of: Web/API/StorageManager/persisted
+---
+<p>{{securecontext_header}}{{APIRef("Storage")}}{{SeeCompatTable}}</p>
+
+<p><span class="seoSummary"><strong><code>persisted()</code></strong></span>方法是<span class="seoSummary">{{domxref("StorageManager")}}的一个接口，如果盒存储模式（</span><strong>box mode</strong><span class="seoSummary">）的值为 “<strong>persistent</strong>” 则返回一个resolved状态值为<code>true</code>的{{jsxref('Promise')}}。</span></p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">navigator.storage.persisted().then(function(persistent) { ... })</pre>
+
+<h3 id="参数">参数</h3>
+
+<p>无</p>
+
+<h3 id="返回值">返回值</h3>
+
+<p>一个状态为resolved，值为{{jsxref('Boolean')}}类型的{{jsxref('Promise')}}。</p>
+
+<h2 id="示例">示例</h2>
+
+<pre class="brush: js"><code>if (navigator.storage &amp;&amp; navigator.storage.persist)
+  navigator.storage.persisted().then(function(persistent) {
+    if (persistent)
+      console.log("Storage will not be cleared except by explicit user action");
+    else
+      console.log("Storage may be cleared by the UA under storage pressure.");
+  });</code></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('Storage','#dom-storagemanager-persisted','persisted')}}</td>
+   <td>{{Spec2('Storage')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+
+
+<p>{{Compat("api.StorageManager.persisted")}}</p>
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