html向超链接中写入变量

<script type="text/javascript">var choice1 = "111";var choice2 = "222";</script>方法一：修改a的href属性<a id="aaa">查看数据</a> <script type="text/javascript">document.getElementById("aaa").href='caxh/down_execgyload?page=1&jgm='+choice1+'&sh='+choice2;</script>方法二：用document.write()<script type="text/javascript">document.write('<a href=caxh/down_execgyload?page=1&jgm='+choice1+'&sh='+choice2+'>查看数据</a>');</script>