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+---
+title: FileSystemDirectoryReader
+slug: Web/API/FileSystemDirectoryReader
+tags:
+  - API
+  - File System API
+  - File and Directory Entries API
+  - FileSystemDirectoryReader
+  - Files
+  - Interface
+  - NeedsTranslation
+  - Non-standard
+  - Offline
+  - Reference
+  - TopicStub
+translation_of: Web/API/FileSystemDirectoryReader
+---
+<p>{{APIRef("File System API")}}{{Non-standard_header}}</p>
+
+<p>The <code>FileSystemDirectoryReader</code> interface of the <a href="/en-US/docs/Web/API/File_and_Directory_Entries_API">File and Directory Entries API</a> lets you access the {{domxref("FileEntry")}}-based objects (generally {{domxref("FileSystemFileEntry")}} or {{domxref("FileSystemDirectoryEntry")}}) representing each entry in a directory.</p>
+
+<div class="note">
+<p>Because this is a non-standard API, whose specification is not currently on a standards track, it's important to keep in mind that not all browsers implement it, and those that do may implement only small portions of it. Check the {{anch("Browser compatibility")}} section for details.</p>
+</div>
+
+<h2 id="Methods">Methods</h2>
+
+<dl>
+ <dt>{{domxref("FileSystemDirectoryReader.readEntries", "readEntries()")}}</dt>
+ <dd>Returns a an array containing some number of the directory's entries. Each item in the array is an object based on {{domxref("FileSystemEntry")}}—typically either {{domxref("FileSystemFileEntry")}} or {{domxref("FileSystemDirectoryEntry")}}.</dd>
+</dl>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('File System API')}}</td>
+   <td>{{Spec2('File System API')}}</td>
+   <td>Draft of proposed API</td>
+  </tr>
+ </tbody>
+</table>
+
+<p>This API has no official W3C or WHATWG specification.</p>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("api.FileSystemDirectoryReader")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/API/File_and_Directory_Entries_API">File and Directory Entries API</a></li>
+ <li><a href="/en-US/docs/Web/API/File_and_Directory_Entries_API/Introduction">Introduction to the File System API</a></li>
+ <li>{{domxref("FileSystemDirectoryEntry")}}</li>
+ <li>{{domxref("FileSystem")}}</li>
+</ul>
diff --git a/files/zh-cn/web/api/filesystemdirectoryreader/readentries/index.html b/files/zh-cn/web/api/filesystemdirectoryreader/readentries/index.html
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+---
+title: FileSystemDirectoryReader.readEntries()
+slug: Web/API/FileSystemDirectoryReader/readEntries
+translation_of: Web/API/FileSystemDirectoryReader/readEntries
+---
+<div>{{APIRef("File System API")}}</div>
+
+<p>{{SeeCompatTable}}{{Non-standard_header}}</p>
+
+<p><span class="seoSummary">The {{domxref("FileSystemDirectoryReader")}} interface's <strong><code>readEntries()</code></strong> method retrieves the directory entries within the directory being read and delivers them in an array to a provided callback function.</span> The objects in the array are all based upon {{domxref("FileSystemEntry")}}. Generally, they are either {{domxref("FileSystemFileEntry")}} objects, which represent standard files, or {{domxref("FileSystemDirectoryEntry")}} objects, which represent directories.</p>
+
+<h2 id="Syntax">Syntax</h2>
+
+<pre class="syntaxbox">readEntries(<em>successCallback</em>[, <em>errorCallback</em>]);
+</pre>
+
+<h3 id="Parameters">Parameters</h3>
+
+<dl>
+ <dt><code>successCallback</code></dt>
+ <dd>A function which is called when the directory's contents have been retrieved. The function receives a single input parameter: an array of file system entry objects, each based on {{domxref("FileSystemEntry")}}. Generally, they are either {{domxref("FileSystemFileEntry")}} objects, which represent standard files, or {{domxref("FileSystemDirectoryEntry")}} objects, which represent directories. If there are no files left, or you've already called <code>readEntries()</code> on this {{domxref("FileSystemDirectoryReader")}}, the array is empty.</dd>
+ <dt><code>errorCallback</code> {{optional_inline}}</dt>
+ <dd>A callback function which is called if an error occurs while reading from the directory. It receives one input parameter: a {{domxref("FileError")}} object describing the error which occurred.</dd>
+</dl>
+
+<h3 id="Return_value">Return value</h3>
+
+<p>{{jsxref("undefined")}}.</p>
+
+<h2 id="Example">Example</h2>
+
+<p>{{page("/en-US/docs/Web/API/DataTransferItem/webkitGetAsEntry", "Example")}}</p>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('File System API')}}</td>
+   <td>{{Spec2('File System API')}}</td>
+   <td>Draft of proposed API</td>
+  </tr>
+ </tbody>
+</table>
+
+<p>This API has no official W3C or WHATWG specification.</p>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("api.FileSystemDirectoryReader.readEntries")}}</p>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="/en-US/docs/Web/API/File_and_Directory_Entries_API">File and Directory Entries API</a></li>
+ <li><a href="/en-US/docs/Web/API/File_and_Directory_Entries_API/Introduction">Introduction to the File System API</a></li>
+ <li>{{domxref("FileSystemDirectoryEntry")}}</li>
+ <li>{{domxref("FileSystem")}}</li>
+</ul>