asp.net中js和jquery不同的调用ashx的方法

=============js================

var xhr = new XMLHttpRequest();

xhr.open("get", 'Controls/gengCart.ashx?CartID=' + input + '&count=' + inp, true);

xhr.setRequestHeader("If-Modified-Since", "0");

xhr.onreadystatechange = function () {

if (xhr.readyState == 4 && xhr.status == 200) {

var result = xhr.responseText;

var json = eval("(" + result + ")");

alert(js.name);

}

};

xhr.send(null);

============jq=====================

$.post('Controls/Cart.ashx', { "productID":<%= GetID %>,"count":"1","userID":'<%= uid %>' }, function (data,statu) {

if (statu == 'success') {

if(data=="false"){

alert("请登录后再进行此操作");

}

else{

window.location="gwc.aspx?uid="+'<%= uid%>';

}

}

})