<script type="text/javascript" charset="UTF-8" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript" charset="UTF-8" src="js/jquery.countdown-timer.min.js"></script>
$('#countdown1').countdownTimer('2019/11/12 12:00', function() {
console.log('end');
});
$('#countdown2').countdownTimer('2019/11/12 12:00')
.on('countdownTimer:end', function() { console.log('end'); })
$('#countdown2').countdownTimer('2019/11/12 12:00')
.on('countdownTimer:render-sec', function() { console.log('render sec'); })
$('.countdown').countdownTimer('2019/11/12 12:00', function() {
console.log('end');
});
<div class="#countdown1">{day}days{hour}:{min}:{sec}.{ms}<div>
<div class="#countdown2">{day:00}days{hour:00}:{min:00}:{sec:00}.{ms:00}<div>
<div class="countdown">{day}days{hour:00}:{min:00}:{sec:00}.{ms:00}<div>
<div class="countdown">{hour:00}:{min:00}:{sec:00}.{ms:00}<div>
<div class="countdown">{min:00}:{sec:00}.{ms:00}<div>
<div class="countdown">{sec:00}.{ms:00}<div>
<div class="countdown">{day:00}days{hour:00}:{min:00}:{sec:00}<div>
<div class="countdown">{day:00}days{hour:00}:{min:00}:{sec:00}.{ms:0}<div>
<div class="countdown">{day:00}days{hour:00}:{min:00}:{sec:00}.{ms:00}<div>
<div class="countdown">{day:00}days{hour:00}:{min:00}:{sec:00}.{ms:000}<div>
$('<dummy>').countdownTimer(Date.now() + 2000, () => console.log('2 seconds later'));
$('<dummy>').countdownTimer('2019/11/12 12:00', () => $('#content').css({display: 'none'}));
countdownTimer:render-day
countdownTimer:render-hour
countdownTimer:render-min
countdownTimer:render-sec
countdownTimer:render-ms
countdownTimer:end
http://xxxxxx.xxx/xxxxx?_countdown_now=20xx-xx-xx.xx:xx