<!DOCTYPE html>
<html>
<body>
<h2>JavaScript Date()</h2>
<p>toUTCString() 方法将日期转换为 UTC 字符串（日期显示标准）：</p>
<p id="demo"></p>
<script>
var d = new Date();
document.getElementById("demo").innerHTML = d.toUTCString();
</script>
</body>
</html>