jquery怎么添加指定标签到某值之后

jquery如何添加指定标签到某值之后
长话短说
例如

HTML code

<ul class="a" v=1"><li>abc</li><li>abc</li><li>abc</li></ul><ul class="a" v=2"><li>abc</li><li>abc</li><li>abc</li></ul><ul class="a" v=3"><li>abc</li><li>abc</li><li>abc</li></ul><a href="javascript:void(0)" class="two">添加分类</a>

JScript code

&(document).ready(function(){$('.two').click(function(){var addstr='';addstr+="<ul class=\"a\">"addstr+="<li>abc</li>"addstr+="<li>abc</li>"addstr+="<li>abc</li>"addstr+="</ul>"$(addstr).insertAfter();//这里我想添加到V=1之后，该怎么写？？？｝）；｝）；