<style>
select{
padding:5px 0;
}
.outer{
width:500px;
margin:20px auto;
}
</style>
<div class="outer">
<select name="province" id="province">
<option value="请选择">请选择</option>
</select>
<select name="city" id="city">
<option value="请选择">请选择</option>
</select>
<select name="town" id="town">
<option value="请选择">请选择</option>
</select>
</div>
<script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
<script src="https://files.cnblogs.com/files/sz_hesheng/area.js"></script>
<script src="https://files.cnblogs.com/files/sz_hesheng/select.js"></script>
