I have this function from code behind (.aspx.cs):

public string GetData()
{
    string str = string.Format(@"SELECT * FROM DEPT.CATERGORY WHERE CAT in ('{0}') ", HfSearch.Value);
    DataTable dt = new DB().DBCat(str);
    return dt == null ? "[]" : JsonConvert.SerializeObject(dt);
}

On .aspx page, I retrive the json like this in the inline script:

rowData: <%= GetData() %>,

I have move the inline script to an external js file, but this above rowData: <%= GetData() %> is no longer working. How should I code it in the external file?

Tia!