使用当前时间倒计时到小时并重置到下一小时倒计时

Question

我更多的是一个 php 程序员，而 Java 脚本对我来说仍然是新的。有很多反脚本和问题，但我找不到可以执行以下操作的任何内容。我使用以下脚本作为我的基本脚本：Styled JavaScript Countdown Clock

function getTimeRemaining(endtime) {
  var t = Date.parse(endtime) - Date.parse(new Date());
  var seconds = Math.floor((t / 1000) % 60);
  var minutes = Math.floor((t / 1000 / 60) % 60);
  var hours = Math.floor((t / (1000 * 60 * 60)) % 24);
  var days = Math.floor(t / (1000 * 60 * 60 * 24));
  return {
    'total': t,
    'days': days,
    'hours': hours,
    'minutes': minutes,
    'seconds': seconds
  };
}

function initializeClock(id, endtime) {
  var clock = document.getElementById(id);
  var daysSpan = clock.querySelector('.days');
  var hoursSpan = clock.querySelector('.hours');
  var minutesSpan = clock.querySelector('.minutes');
  var secondsSpan = clock.querySelector('.seconds');

  function updateClock() {
    var t = getTimeRemaining(endtime);

    daysSpan.innerHTML = t.days;
    hoursSpan.innerHTML = ('0' + t.hours).slice(-2);
    minutesSpan.innerHTML = ('0' + t.minutes).slice(-2);
    secondsSpan.innerHTML = ('0' + t.seconds).slice(-2);

    if (t.total <= 0) {
      clearInterval(timeinterval);
    }
  }

  updateClock();
  var timeinterval = setInterval(updateClock, 1000);
}

var deadline = new Date(Date.parse(new Date()) + 15 * 24 * 60 * 60 * 1000);
initializeClock('clockdiv', deadline);

body{
	text-align: center;
	background: #00ECB9;
  font-family: sans-serif;
  font-weight: 100;
}

h1{
  color: #396;
  font-weight: 100;
  font-size: 40px;
  margin: 40px 0px 20px;
}

#clockdiv{
	font-family: sans-serif;
	color: #fff;
	display: inline-block;
	font-weight: 100;
	text-align: center;
	font-size: 30px;
}

#clockdiv > div{
	padding: 10px;
	border-radius: 3px;
	background: #00BF96;
	display: inline-block;
}

#clockdiv div > span{
	padding: 15px;
	border-radius: 3px;
	background: #00816A;
	display: inline-block;
}

.smalltext{
	padding-top: 5px;
	font-size: 16px;
}

<h1>Countdown Clock</h1>
<div id="clockdiv">
  <div>
    <span class="days"></span>
    <div class="smalltext">Days</div>
  </div>
  <div>
    <span class="hours"></span>
    <div class="smalltext">Hours</div>
  </div>
  <div>
    <span class="minutes"></span>
    <div class="smalltext">Minutes</div>
  </div>
  <div>
    <span class="seconds"></span>
    <div class="smalltext">Seconds</div>
  </div>
</div>

我想使用当前时间并让它倒计时到下一个小时，它将重置并重新开始。因此，每小时将是 00:00（分钟/秒），然后重新设置为从 59:59 开始倒计时。请帮忙！！！

Answer 1

通过从 3600 中减去当前分钟 * 60 + 秒，您可以得到下一个整小时的时间。让我们添加 100 天，这样倒计时将在接下来的 100 天内有效。

function getTimeRemaining(endtime) {
  var t = Date.parse(endtime) - Date.parse(new Date());
  var seconds = Math.floor((t / 1000) % 60);
  var minutes = Math.floor((t / 1000 / 60) % 60);
  var hours = Math.floor((t / (1000 * 60 * 60)) % 24);
  var days = Math.floor(t / (1000 * 60 * 60 * 24));
  return {
    'total': t,
    'days': days,
    'hours': hours,
    'minutes': minutes,
    'seconds': seconds
  };
}

function initializeClock(id, endtime) {
  var clock = document.getElementById(id);
  var daysSpan = clock.querySelector('.days');
  var hoursSpan = clock.querySelector('.hours');
  var minutesSpan = clock.querySelector('.minutes');
  var secondsSpan = clock.querySelector('.seconds');

  function updateClock() {
    var t = getTimeRemaining(endtime);

    minutesSpan.innerHTML = ('0' + t.minutes).slice(-2);
    secondsSpan.innerHTML = ('0' + t.seconds).slice(-2);

    if (t.total <= 0) {
      clearInterval(timeinterval);
    }
  }

  updateClock();
  var timeinterval = setInterval(updateClock, 1000);
}

var now = Date.parse(new Date());
var seconds = Math.floor((now / 1000) % 60);
var minutes = Math.floor((now / 1000 / 60) % 60);
var left_to_hour = 60 * 60 * 1000 - (minutes * 60 + seconds) * 1000;
// add 100 days
var deadline = new Date(now + left_to_hour + 100 * 24 * 60 * 60 * 1000);

initializeClock('clockdiv', deadline);

body {
	text-align: center;
	background: #00ECB9;
  font-family: sans-serif;
  font-weight: 100;
}

h1 {
  color: #396;
  font-weight: 100;
  font-size: 40px;
  margin: 40px 0px 20px;
}

#clockdiv{
	font-family: sans-serif;
	color: #fff;
	display: inline-block;
	font-weight: 100;
	text-align: center;
	font-size: 30px;
}

#clockdiv > div {
	padding: 10px;
	border-radius: 3px;
	background: #00BF96;
	display: inline-block;
}

#clockdiv div > span {
	padding: 15px;
	border-radius: 3px;
	background: #00816A;
	display: inline-block;
}

.smalltext {
	padding-top: 5px;
	font-size: 16px;
}

<h1>Countdown Clock</h1>
<div id="clockdiv">
  <div>
    <span class="minutes"></span>
    <div class="smalltext">Minutes</div>
  </div>
  <div>
    <span class="seconds"></span>
    <div class="smalltext">Seconds</div>
  </div>
</div>

Answer 2

您只需要修改 getTimeRemaining 剩余函数，使其将分钟和秒返回到下一个完整小时，例如：

/* Return minutes and seconds to next hour
** @returns {Object} minutes: minutes remaining
**                   seconds: seconds remaining
*/
function getTimeRemaining() {
  var t = Date.now();
  var seconds = (60 - Math.floor(t % 6e4 / 1e3)) % 60;
  var minutes = 60 - Math.ceil(t % 3.6e6 / 6e4) + (seconds? 0:1);
  return {
    'minutes': ('0' + minutes).slice(-2),
    'seconds': ('0' + seconds).slice(-2)      };
}

// Simple show remaining function
function showRemaining() {
  var r = getTimeRemaining();
  document.getElementById('clock').textContent = (r.minutes + ':' + ('0' + r.seconds).slice(-2));
  // Run again just after next full second
  setTimeout(showRemaining, 1020 - (Date.now() % 1000));
}

showRemaining();

<span id="clock"></span>