---
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>