[Answer]-Ajax JSON response not working, the type is not json

Add csrf_exempt decorator to move_card function or add csrfmiddlewaretoken to ajax request data.

take a look this: https://docs.djangoproject.com/en/dev/ref/contrib/csrf/

example code:

add csrf_exempt to function

from django.views.decorators.csrf import csrf_exempt

@csrf_exempt
def move_card(request):
    response_data = {'success': 'True'}
    return HttpResponse(json.dumps(response_data ), content_type="application/json")

add csrfmiddlewaretoken to post data

check this: https://docs.djangoproject.com/en/dev/ref/contrib/csrf/#ajax