ChartJS Line Chart

Multiple Line Chart

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.js"></script>
  <h3>Question 1 of 20<time id="countdown">5:00</time></h3>
  <form name="qForm">
    <input type="radio"> 219
    <input type="submit" value="Submit">
  </form>

CSS

body {
  background-color: #eee;
}

canvas {}

time {color: red; float: right;}

.active {color: green; font-size: 12px; font-weight: bold;}

JavaScript

var seconds = 300;

         function secondPassed() {
           var minutes = Math.round((seconds - 30) / 60),
             remainingSeconds = seconds % 60;

           if (remainingSeconds < 10) {
             remainingSeconds = "0" + remainingSeconds;
           }

           document.getElementById('countdown').innerHTML = minutes + ":" + remainingSeconds;
           if (seconds == 0) {
             clearInterval(countdownTimer);
             document.qForm.submit();
           } else {
             seconds--;
           }
         }
         var countdownTimer = setInterval(secondPassed, 1000);