问在ajax方法的成功回调中无法在cookie中存储数据

EN

$.ajax({
    url: "http://localhost:12345/Login",
    type: "Post",
    contentType: "application/json",
    data: (data),
    headers: {
        "Accept": "application/json",
        "Content-Type": "application/x-www-form-urlencoded"
    },
    success: handleData,
    error: function (msg) {
        alert(msg);
    }
});



function handleData(data) {
    $.cookie("example", "foo");
    $.cookie("userid", JSON.stringify(data["userid"]));
}

$.cookie('menu-data', "Hello");
alert($.cookie("menu-data"));