Django csrf_token is null in chrome

I have a slightly weird problem. I am writing a simple little application and I need to send some stuff back to django view. I am following the guide here: https://docs.djangoproject.com/en/1.7/ref/contrib/csrf/ to set the ajax headers and have the following code in js:

function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie != '') {
    var cookies = document.cookie.split(';');
    for (var i = 0; i < cookies.length; i++) {
        var cookie = jQuery.trim(cookies[i]);
        // Does this cookie string begin with the name we want?
        if (cookie.substring(0, name.length + 1) == (name + '=')) {
            cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
            break;
        }
    }
}
return cookieValue;
}

var csrftoken = getCookie('csrftoken');
console.log(csrftoken)

function csrfSafeMethod(method) {
    // these HTTP methods do not require CSRF protection
    return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
$.ajaxSetup({
    beforeSend: function(xhr, settings) {
        if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
            xhr.setRequestHeader("X-CSRFToken", csrftoken);
        }
    }
});

      

        
        
        
      

    

I have a form in my html with code:

<form onsubmit="return false;">
                {% csrf_token %}
                <input type="text" id="map-id-input"/>
                <button id="map-id-btn" class='btn btn-default custom-btn'>
                    Go 
                </button>
            </form>

      

        
        
        
      

    

I also have a piece of js code that runs when the button above is clicked:

$(function() {
$("#map-id-btn").click(function() {
    checkMapID();
})
})

function checkMapID() {
    var mapId = $("#map-id-input").val();
    $.ajax({
        url: "check_map_id/", 
        type: "POST",
        dataType: "json", 
        data: {
            csrfmiddlewaretoken: csrftoken,
            map_id: mapId,
        },
        success: function(status_dict) {
            if (status_dict.status === 1) {
                $("#status").html("Valid map ID <br> Loading Data...")
                window.location = status_dict.url;
            }
            else {
                $("#status").html("Invalid map ID. Please try again, or contact ...")
            }
        },
        error: function(result) {
            console.log(result)
        }
    });
}

      

        
        
        
      

    

All my Javacript is in one file, placed at the top of my template.

The view that catches the URL 'check_map_id /' looks like this:

@ensure_csrf_cookie
def check_map_id(request):
map_id = request.POST['map_id']

if map_id not in GEOJSON_LOOKUP.keys():
    status = json.dumps({
        'status': 0,
        'url': '',
    })  
    return HttpResponse(status, content_type="application/json")
else:
    status = json.dumps({
        'status': 1,
        'url': reverse('map', args=(map_id,)),
    })
    return HttpResponse(status, content_type="application/json")

      

        
        
        
      

    

Now when I run the application on my local machine using firefox, I get a valid csrf token that is printed to the console. If I run the application on my local machine in chrome or IE, I get zero typing. The same behavior is repeated on a real site. I am using linux (mint) and oddly enough if I run the app in firefox on a windows machine it returns null in firefox as well. Something strange here! Any ideas? I seem to be doing exactly what the django documentation suggests.

UPDATE: I added @ensure_csrf_cookie to my index and now I get the token printed on both browsers on my local machine. However, the code doesn't work on my real server. If I output some random console.logs in js, they are displayed on the real server, so the code runs. I'm really at a loss.

UPDATE2: So I established that the problem is that on my live site, the document.cookie property is not being set. I think the csrftoken = "..." cookie is set by django. It seems to be a setting on my local machine, but not on my site. The code is identical: /. What's going on here?!