how do I redirect from one page to another using javascript and/or jquery and basic authentication

When you 'redirect' the browser in any method, all you have to work with is the URL.  And for it to work at the 'server' level, you have to have the 'basic authentication' already set up on the server.

You have to do this in two steps and in server side code.

1 -  Use the HttpWebRequest to call the page you want to transfer to. When you make this call, you set any basic authorisation headers that are needed. If you are expecting, create a cookie container there as well. Something like:

var webRequest = (HttpWebRequest)WebRequest.Create(url);
string authorization = "username" + ":" + "Password";
byte[] binaryAuthorization = System.Text.Encoding.UTF8.GetBytes(authorization);
authorization = Convert.ToBase64String(binaryAuthorization);
autorization = "Basic " + autorization;
webRequest.Headers.Add("AUTHORIZATION", autorization);
var webResponse = (HttpWebResponse)webRequest.GetResponse();
if (webResponse.StatusCode != HttpStatusCode.OK) Console.WriteLine("{0}",webResponse.Headers);
//inspect the status code here and check headers and cookies 

using (StreamReader reader = new StreamReader(webResponse.GetResponseStream()))
{
    string s = reader.ReadToEnd();
    Console.WriteLine(s);
    reader.Close();
}

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2 -  when the call to the https request above returns, you must inspect the response. If it is a 3xx, you will have a Location header. Some websites redirect you on successful login. Some will set cookies on successful authentication and so on. This call merely mimics a sign in. Once you have grabbed the headers and cookies as needed, you can then use this data to redirect the user to the https website http://www.codeproject.com/Articles/49243/Handling-Cookies-with-Redirects-and-HttpWebRequest