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+---
+title: Document.hasStorageAccess()
+slug: Web/API/Document/hasStorageAccess
+translation_of: Web/API/Document/hasStorageAccess
+---
+<div>{{APIRef}}{{seecompattable}}</div>
+
+<div>{{domxref("Document")}}的<strong><code>hasStorageAccess()</code></strong> 方法返回了一个{{jsxref("Promise")}}来判断该文档是否有访问第一方储存的权限。</div>
+
+<p>通过 <a href="/en-US/docs/Web/API/Storage_Access_API">Storage Access API</a> 获取更多信息。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">var <em>promise</em> = document.hasStorageAccess();</pre>
+
+<h3 id="参数">参数</h3>
+
+<p>None.</p>
+
+<h3 id="返回值">返回值</h3>
+
+<p>一个用来判断文档是否有权利访问其第一方存储的{{jsxref("Promise")}} 。</p>
+
+<p>If the promise gets resolved and a user gesture event was being processed when the function was originally called, the resolve handler will run as if a user gesture was being processed, so it will be able to call APIs that require user activation.</p>
+
+<h2 id="Examples">Examples</h2>
+
+<pre class="brush: js">document.hasStorageAccess().then(hasAccess =&gt; {
+  if (hasAccess) {
+    // storage access has been granted already.
+  } else {
+    // storage access hasn't been granted already;
+    // you may want to call requestStorageAccess().
+  }
+});</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<p>The API is currently only at the proposal stage — the standardization process has yet to begin. You can currently find specification details of the API at Apple's <a href="https://webkit.org/blog/8124/introducing-storage-access-api/">Introducing Storage Access API</a> blog post, and <a href="https://github.com/whatwg/html/issues/3338">WHATWG HTML issue 3338 — Proposal: Storage Access API</a>.</p>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("api.Document.hasStorageAccess")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<p><a href="/en-US/docs/Web/API/Storage_Access_API">Storage Access API</a></p>