ajax 初始化请求前携带参数

$(function () {
    function SetAjax(wxOpenId, departCode) {
        $.ajaxSetup({
            xhrFields: {
                withCredentials: true
            },
            beforeSend: function (o) {
                if (wxOpenId && departCode) {
                    o.setRequestHeader(‘wxOpenId‘, " " + wxOpenId);
                    o.setRequestHeader(‘DepartCode‘, " " + departCode);
                }
            }
        });
    }

var wxOpenId = App.GetQueryStringByName("wxOpenId");
    var DepartCode = App.GetQueryStringByName("DepartCode");

if (!wxOpenId) {
        wxOpenId = App.GetCookie("wxOpenId");
    } else {
        App.SetCookie("wxOpenId", wxOpenId, 365);
    }

if (!DepartCode) {
        DepartCode = App.GetCookie("DepartCode");
    } else {
        App.SetCookie("DepartCode", DepartCode, 365);
    }

if (wxOpenId && departCode){
        SetAjax(wxOpenId, departCode);
    }
});