jquery ajax 调用失败的原因示例介绍_jquery

function ReLoadPromotion() {
var A = parseFloat($("#pNormalTotal").html()) + parseFloat($("#pBarginTotal").html());
jQuery.ajax(
{
url: "/ajax/OrderRedemption.aspx?vf=getlist",
type: "POST",
dataType: "json",
data:{amount:A},
success: function (json) {
$("#fittingProductList tr.tableItem").remove();
var data = json.list;
$.each(data, function (i, n) {
var id = n.pid;
var row = "";
row += "";
row += "" + n.pname + "";
row += "满" + n.amount + "";
row += "" + n.price + "";
row += "";
$("#fittingProductList").append(row);
});
$("#promotionArea").slideDown();
CalculateOrder();
},
error: function (xml) {

//alert(arguments[1]);
var json = eval("(" + xml.responseText + ")");
$("#promotionArea").slideUp();
}
});
}