JSON弄乱了我的变音符号

I'm sending a string using jQuery AJAX POST and JSON:

$.ajax({
    type: "POST",
    dataType: "JSON",
    url: "someUrl.asp?param1=someParam1",
    contentType: "charset=utf-8",
    data: JSON.stringify({
        some_code: $( "#some_code" ).length > 0 ? $("#some_code").val() : ''
        })
    })

Serverside is VBScript/ASP.

some_code is a textbox with following text: someValue čšžćđ that needs to be saved just like that.

When scanning network traffic (IE9) I see this: some_code=someValue Äšžćđ

When looking in the database (Oracle 12c) I see this: someValue ?????

Html page encoding is Windows-1250. NLS_LANG and NLS_CHARACTERSET are Slovenian.

I've tried out advice from at least a dozen different links, but to no avail, so I'm turning to you guys and girls. Thank you!

Right from the comments think I understand the issue;

The JSON has to be sent as contentType: "charset=utf-8" so the page someUrl.asp will also need to process in UTF-8 to do this follow the below steps.

Based on your comment have made some changes to the below code.

1. First re-save the someUrl.asp file using UTF-8 encoding not ASCII.

2. Set the first line in someUrl.asp to;

   <%@Language="VBScript" CodePage = 65001 %>
   

3. Then add the following lines;

   <%
   Response.Charset = "Windows-1250"
   Response.CodePage = 1250
   %>
   

Note: When making changes always remember to save the file with UTF-8 encoding.