jquery append() 追加内容 remove() 删除回调

Html
<div class="row1 height28 s_consignee_city"></div>
<select name="shipping_method" class="selectForm" onchange="getShipCost();changeProductBarStyle(),changeSalesValesShow()" style="width:263px;">

js
//根据运输方式查看邮编与城市对应关系的验证
function getShipCost(){
var ship_method = $('[name =shipping_method]').val();
if (ship_method == "ESEXP") {
$("#look_over").remove();
$(".s_consignee_city").append("<a href='/file/Spain_City.xls' id='look_over' style='color:red'>查看</a>");
} else if (ship_method == "AUEXP") {
$("#look_over").remove();
$(".s_consignee_city").append("<a href='/file/auexp-city.xls' id='look_over' style='color:red'>查看</a>");
} else {
$("#look_over").remove();
}
}