用Jquery ajax调用后台方法，报错

Question

function ChangeTree(types) {
var sendData="{ type:\""+ types +"\"}";
$.ajax({
type: "post",
url: "BrowseK.aspx/GetTreeXml",
data: sendData,
success: function (data) {
alert(sendData);
ChangeTreeCallBack(data);
},
error: function () {
alert("Error");
}
});
//KLMS.BrowseK.GetTreeXml(type, ChangeTreeCallBack);
}

    function ChangeTreeCallBack(response)
    {
        var result = $.trim(response.value);
        var items_a = dhxTree.getAllItemsWithKids().split(',');
        var items_b = dhxTree.getAllChildless().split(',');
        for (var i = 0; i < items_a.length; i++) 
        {
            dhxTree.deleteItem(items_a[i],true);
        }
        for (var k = 0; k < items_b.length; k++) {
            dhxTree.deleteItem(items_b[k], true);
        }
        dhxTree.loadXMLString(result);
    }

 [WebMethod]
        public static string GetTreeXml(string type)
        {
            string rootID = "";
            return new SK.BLL.catalog_bll().GetCatalogXml(type, "0", ref rootID);
        }

Answer 1

你这 报啥错都不知道。。