in my quiz Django app the quot ions are all loaded in one page and it works when the student start the exam the time is count down and when it is over it closed the exam page and redirect to the result page and if the time is over with out submission the current code is return the previous result or zero but what i want is to track of the selected answers(if the student selected some answers but not submitted) it should be evaluated and give that result!! here is my java script code

<script> 
  
    function saveAns(){  

        var ele = document.getElementsByTagName('input'); 
        for(i = 0; i < ele.length; i++) { 
            if(ele[i].type="radio") { 
                if(ele[i].checked){        
                  setCookie(ele[i].name,ele[i].value,3)
                }
            } 
        } 
          
    }
    
    function setCookie(cname, cvalue, exdays) {
  var d = new Date();
  d.setTime(d.getTime() + (exdays*24*60*60*1000));
  var expires = "expires="+ d.toUTCString();
  document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}
window.onload = function begin(){
document.getElementById('timer').innerHTML =
  {{quiz.time_limit_mins}} + ":" + 00;
startTimer();
}

function startTimer() {
  var presentTime = document.getElementById('timer').innerHTML;
  var timeArray = presentTime.split(/[:]+/);
  var m = timeArray[0];
  var s = checkSecond((timeArray[1] - 1));
  if(s==59){m=m-1}
  if(m<0){
    document.getElementById('quiz').submit();
  }
  document.getElementById('timer').innerHTML =
    m + ":" + s;
  setTimeout(startTimer, 1000);
}

function checkSecond(sec) {
  if (sec < 10 && sec >= 0) {sec = "0" + sec}; // add zero in front of numbers < 10
  if (sec < 0) {sec = "59"};
  return sec;
}

</script>