完整（四位数）年份或最后两位数的年份更新，使用JavaScript

Posted 2021-02-25

For full year (four digits):
 
JS:
 
today=new Date();
y0=today.getFullYear();
 
html:
 
<p>&copy; <script type="text/javascript">document.write(y0);</script> Somecompany, Inc. All Rights reserved.</p>
 
- - - - -
 
For partial year (last two digits):
 
JS:
 
var foo = (new Date().getFullYear()).toString();
	// Contains last two characters of the full year.
	// ex: 2003 evaluates to 03.
	var bar = foo.substring(foo.length, 2);
 
HTML:
 
<p>All contents &trade; and &copy; 2005-<script type="text/javascript">document.write(bar);</script> Somecompany, Inc. unless otherwise noted herein. All rights reserved.</p>