代码示例:(标识:jsck_document_lastmodified_2)
<!DOCTYPE html>
<html>
<body>

<h1>Document 对象</h1>

<h2>lastModified 属性</h2>

<p>将 lastModified 属性转换为 Date 对象:</p>

<p id="demo"></p>

<script>
const date = new Date(document.lastModified);
document.getElementById("demo").innerHTML = date;
</script>

</body>
</html>
运行结果: