我需要在JavaScript中启动计时器5:00分钟。该计时器需要在一整天的特定时间运行,我所能做的就是手动运行5:00分钟计时器。如何使其自动化?
答案 0 :(得分:1)
创建倒数计时器
// Set the date we're counting down to
var countDownDate = new Date("Jan 5, 2020 15:37:25").getTime();
// Update the count down every 1 second
var x = setInterval(function() {
// Get todays 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 id="demo"
document.getElementById("demo").innerHTML = days + "d " + hours + "h "
+ minutes + "m " + seconds + "s ";
// If the count down is over, write some text
if (distance < 0) {
clearInterval(x);
document.getElementById("demo").innerHTML = "EXPIRED";
}
}, 1000);
p {
text-align: center;
font-size: 60px;
margin-top: 0px;
}
<p id="demo"></p>