how to draw a javascript progress bar on a page from a django view

howto.javascriptdjango.progressbar.txt

<div class="progress">
   <div id="dynamic" class="progress-bar progress-bar-success progress-bar-striped active" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width: 0%">
     <span id="current-progress"></span>
   </div>
</div>
<script>
var current_progress = 0;
var interval = setInterval(function() {
    var progressUrl = '{% url "detail_tasks" object.uuid %}';
    fetch(progressUrl, {
                  headers: {
                  'Accept': 'application/json',
                  'X-Requested-With': 'XMLHttpRequest'
                  },
                  credentials: 'include'
              })
    .then(function(response) {
        response.json().then(
            function(data) {
              current_progress = data.progress_percent;
              console.log("here");
              $("#dynamic")
              .css("width", current_progress + "%")
              .attr("aria-valuenow", current_progress)
              .text(current_progress + "% Complete");
            })
    })
    if (current_progress >= 100) {
        // do something here like hide the DIV and then stop the polling
        // you could even slow down the interval and check less frequently to see if you need to light up another task monitor bar
        clearInterval(interval); };
}, 1000);
</script>
............ and from within views ............
def tasks_view(request, uuid)
    // // pseudocode 
    //get the object in question
    //get the tasks or gather the flags to determine how that object is doing on whatever it's doing
    //prepare the response
    
    response_data = {
        'state': "PENDING",  # unused in my example
        'details': "x of y completed",  # unused in my example
        'progress_percent': 45,
    }
    from django.http import JsonResponse
    return JsonResponse(response_data)
    #return HttpResponse(json.dumps(response_data), content_type='application/json')  # alternative without JsonResponse
----------- urls.py
        path('/object/detail/tasks/<uuid:uuid>/', views.tasks_view, name="detail_tasks"),

stole a day from me.