jQuery.countdown

Continue after finish

Configure countdown to continue after reaches its end, then the timer will start to counting up and will never stop until said so.

HTML:

<div id="clock"></div>

JS:

var fiveSeconds = new Date().getTime() + 5000;
$('#clock').countdown(fiveSeconds, {elapse: true})
.on('update.countdown', function(event) {
  var $this = $(this);
  if (event.elapsed) {
    $this.html(event.strftime('After end: <span>%H:%M:%S</span>'));
  } else {
    $this.html(event.strftime('To end: <span>%H:%M:%S</span>'));
  }
});