That bit of CSRF javascript does not "ignore" CSRF checking, and is not unsafe. The only difference is that it sets the CSRF token value as a request header rather than a POST value. The browser still needs to have that CSRF cookie value.

Edit: Code backing from middleware/csrf.py:

request_csrf_token = request.POST.get('csrfmiddlewaretoken', '') if request_csrf_token == "": # Fall back to X-CSRFToken, to make things easier for AJAX request_csrf_token = request.META.get('HTTP_X_CSRFTOKEN', '')