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+---
+title: File.lastModifiedDate
+slug: Web/API/File/lastModifiedDate
+translation_of: Web/API/File/lastModifiedDate
+---
+<p>{{APIRef("File API")}}</p>
+
+<h2 id="概述">概述</h2>
+
+<p>返回当前文件的最后修改日期,如果无法获取到文件的最后修改日期,则使用当前日期来替代.</p>
+
+<h2 id="示例">示例</h2>
+
+<pre class="brush:js">// fileInput是一个HTMLInputElement元素: &lt;input type="file" multiple id="myfileinput"&gt;
+var fileInput = document.getElementById("myfileinput");
+
+// files是一个FileList对象(类似于NodeList对象)
+var files = fileInput.files;
+
+for (var i = 0; i &lt; files.length; i++) {
+  alert(files[i].name + " has a last modified date of " + files[i].lastModifiedDate);
+}</pre>