@{
    ViewData["Title"] = "test";
}
<h1>@ViewData["Title"]</h1>

<button id="click">测试ajax</button>
@section Scripts{
    <script type="text/javascript">
        $("#click").on("click",function(){
            var postdata = {"id":"08d9f761-b402-47f0-8656-0e529a9b5b8b"};
            $.ajax({
                url:"https://localhost:44335/ybapi/fans/getinfo",
                method:"post",
                xhrFields: {
                    withCredentials: false  // 如果是https请求，可以试试 true
                },
                crossDomain: true,
                contentType:"application/json",
                data:JSON.stringify(postdata),
                success:function(res){
                    console.log(res);
                }
            });
        });
    </script>
}