重定向到新页面以响应XHR发布请求

Question

I have no way to fix the javascript. The page uses a XHR

function openPOST(url, params, callback) {
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.open("POST", url, true);
        xmlhttp.setRequestHeader('Content-Type', "application/x-www-form-rlencoded");
        xmlhttp.send(params);
        xmlhttp.onreadystatechange = function() {
            if (this.readyState === 4) {
                if (xmlhttp.status === 200) {
                    if (callback) callback(this.responseText);
                }
            }
        }
        return xmlhttp;
    };

At the time of page load, use the following query

document.addEventListener('DOMContentLoaded', function () {
        ...
        function go() {
            openPOST("/home/someaction", "query=123", function (count) {
                document.querySelector("h1").textContent = count;
            });
        }
        ...
        go();
        ...
});

Is it possible to implement such a code to ASP.NET MVC so he moved on to another page, but did not put the result in another page ?

I need to POST requests are redirected to the page to a different address.

the following code inserts the result in document.querySelector("h1").textContent

public void someaction() {
            Response.Status = "307 Temporary Redirect";
            Response.AddHeader("Location", "http://example.com");
        }

EDIT: User opened an old version of our webpage in his browser. This webpage makes an ajax call to our webserver and inserts response as a string (no eval(), js code won't work). Is there are any way to reload this web page from our server?

Answer 1

On your action method, you can call a Javascript code by returning a Javascript result

[HttpPost]
public ActionResult someaction() {
    if (Request.IsAjaxRequest()) {
        return JavaScript("document.location.href=\"http://www.google.com\"");
    } else {
        return Redirect("http://wwww.google.com");
    }
}