[英]Multiple countdown in same page
我需要一些有关 javascript 代码的帮助,我尝试获取适用于同一页面上的多个倒数计时器的代码。 我尝试了下面的代码,但没有成功。
<div class="expirydiv">Jan 02,2019</div>
<div class="expirydiv">jun 15,2019</div>
<script>
// Set the date we're counting down to
var ps = document.querySelectorAll("div.expirydiv");
var countDownDate = new Date(ps).getTime();
// Update the count down every 1 second
var x = setInterval(function() {
// Get today's date and time
var now = new Date().getTime();
// Find the distance between now and the count down date
var distance = countDownDate - now;
// Time calculations for days, hours, minutes and seconds
var days = Math.floor(distance / (1000 * 60 * 60 * 24));
var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance % (1000 * 60)) / 1000);
// Output the result in an element with classname="expirydiv"
for(var i=0; i<ps.length; i++){
ps[i].innerHTML = days + "d " + hours + "h "
+ minutes + "m " + seconds + "s ";
// If the count down is over, write some text
if (distance < 0) {
clearInterval(x);
ps[i].innerHTML = "EXPIRED";
}
}
}, 1000);
</script>
上面代码的结果如下所示:
NaNd NaNh NaNm NaNs
NaNd NaNh NaNm NaNs
这段代码有什么问题,我认为查询选择器无法将 select div.expirydiv 作为日期。
更改var countDownDate = new Date(ps).getTime();
到var countDownDate = new Date(ps[0].innerHTML).getTime();
您正在使用多个倒计时,因此您需要遍历它们并设置计时器。
var ps = document.querySelectorAll("div.expirydiv"); ps.forEach(function(timer){ var countDownDate = new Date(timer.innerText).getTime(); var x = setInterval(function() { var now = new Date().getTime(); var distance = countDownDate - now; var days = Math.floor(distance / (1000 * 60 * 60 * 24)); var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)); var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60)); var seconds = Math.floor((distance % (1000 * 60)) / 1000); timer.innerHTML = days + "d " + hours + "h " + minutes + "m " + seconds + "s "; if (distance < 0) { clearInterval(x); timer.innerHTML = "EXPIRED"; } }, 1000); });
<div class="expirydiv">Dec 02,2019</div> <div class="expirydiv">Dec 15,2019</div>
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