在线留言 省市区联动

<li><label>地　　址：</label><input name="txtAddress" type="hidden"/>
<select name="province" class="select" datatype="*" nullmsg="请选择省份" sucmsg=" "></select>
<select name="city" class="select" datatype="*" nullmsg="请选择城市" sucmsg=" "></select>
<select name="area" class="select" datatype="*" nullmsg="请选择地区" sucmsg=" "></select></li>

<script src="/scripts/js/PCASClass.js"></script>

new PCAS("province,请选择", "city,请选择", "area,请选择"); //地址

$('select[name="area"]').change(function () {
var address = $('select[name="province"]').val() + $('select[name="city"]').val() + $('select[name="area"]').val();
console.log(address);(address);
$('input[name="txtAddress"]').val(address);
});