~~~
<script type="text/javascript">
var intDiff = parseInt(500); //倒计时总秒数量
function timer(intDiff) {
window.setInterval(function() {
if (intDiff <= 5) {
document.getElementById('qrcode').innerHTML = '<br/><br/><br/><br/><br/><br/><h1>二维码已过期,请重新发起交易</h1><br/>'
};
var day = 0,
hour = 0,
minute = 0,
second = 0; //时间默认值
if (intDiff > 0) {
day = Math.floor(intDiff / (60 * 60 * 24));
hour = Math.floor(intDiff / (60 * 60)) - (day * 24);
minute = Math.floor(intDiff / 60) - (day * 24 * 60) - (hour * 60);
second = Math.floor(intDiff) - (day * 24 * 60 * 60) - (hour * 60 * 60) - (minute * 60);
}
if (minute <= 9) minute = '0' + minute;
if (second <= 9) second = '0' + second;
//$('#day_show').html(day+"天");
//$('#hour_show').html('<s id="h"></s>'+hour+'时');
$('#minute_show').html('<s></s>' + minute + '分');
$('#second_show').html('<s></s>' + second + '秒');
intDiff--;
},
1000);
}
$(function() {
timer(intDiff);
});
</script>
~~~