how to get href link of a tag using jquery

<td colspan="4">
<a id="currentpage">1</a>
<a href="home/Search?txtSearch=a&Page="2">2</a>
<a  href="home/Search?txtSearch=a&Page="3">3</a>
<a  href="home/Search?txtSearch=a&Page="4">4</a>
</td>

var r = $('.webgrid-table tfoot tr td a');
               for (var i = 0; i < r.length; i++) {
                   alert("Hello "+r.attr('href'));
               }