Add the current year to copyright notice/footer

copyrightYear.html

<!-- Assuming you have the text &copy <span id="year"></span> in your footer -->

<!-- Without jQuery, add to bottom of page -->
<script>document.getElementById('year').textContent = (new Date()).getFullYear();</script>

<!-- If you're using jQuery, add this to $(document).ready() or $(function()) -->
$('#year').text((new Date()).getFullYear());

<!-- One line in the HTML page -->
<footer>copyright © <script>document.write((new Date()).getFullYear());</script></footer>