Ajax request when background jump front page does not update pit record

Pit environment: Front end: Ajax POST request, JSON type data, backend C#+mvc, the front and back end of normal communication, but when the background verification permission does not pass redirecttoaction jump to the login page, the result is the background normal execution of the login page rendering, After rendering is complete, the front end Ajax enters error and the page does not refresh.

The check page does not jump because the background render the page as a string return, by Ajax received, because the front-end set JSON format so enter the error, it seems to need to return to the background status and URL, front-end JS to page jump, but always feel so inconvenient, Continue to study whether to achieve background jump, there is a plan to update the content.

Ajax request when background jump front page does not update pit record