每月的每个星期天如何倒计时？

Question

我的网站上有倒计时，我希望它倒计时到下周日上午 11:00，当它是周日上午 11:01 时，我希望它自动倒计时到下周日上午 11:00。我希望每个月都重复一次..

我有这个脚本，但似乎无法让它工作，有人可以帮我吗？

提前致谢

这是我的html...

<div class="eventtd">
        <div class="nextevt">Next Service Start In:</div>
           <div class="time" contents="2" rel="1374397200">
       </div> <!-- end time -->

这是我使用的脚本，截至目前，当它达到 0 时，它会继续变为负值而不是重置。

jQuery(document).ready(function($) {

if (timerhelp == 'yes') {
    var init = setInterval(animation, 100);
}
function animation(){       
    var deadline1 = $('.time').attr('rel');
    var deadline2 = $('.time').attr('contents');
    var now = new Date();
    now = Math.floor(now / 1000);
    now = now + Math.floor(deadline2 * 60 * 60);
    var counter1 = deadline1 - now;
    var seconds1=Math.floor(counter1 % 60);
    if (seconds1 < 10 && seconds1 > 0 ){
        seconds1 = '0'+seconds1;

    }
    counter1=counter1/60;
    var minutes1=Math.floor(counter1 % 60);
    if (minutes1 < 10 && minutes1 > 0){
        minutes1 = '0'+minutes1;

    }
    counter1=counter1/60;
    var hours1=Math.floor(counter1 % 24);
    if (hours1 < 10 && hours1 > 0){
        hours1 = '0'+hours1;
    }
    counter1=counter1/24;
    var days1=Math.floor(counter1);
    if (days1 < 10 && days1 > 0){
        days1 = '0'+days1;
    }
    $('.time').html('<table><tbody><tr><th class="day">'+days1+'</th><th class="day">'+hours1+'</th><th class="day">'+minutes1+'</th><th class="day">'+seconds1+'</th></tr><tr><th>Days</th><th>Hours</th><th>Min</th><th>Sec</th></tr></tbody></table>');


}
});

Answer 1

这段代码应该总是在下个星期天给你：

var now = new Date();
var sunday = new Date();
sunday.setDate(now.getDate() - now.getDay()); // Make Sunday
sunday.setHours(11); // Set 11am
sunday.setMinutes(0);
sunday.setSeconds(0);
sunday.setMilliseconds(0);
if (sunday < now) sunday.setDate(sunday.getDate() + 7); // Make sure it's future
millisecondsLeft = sunday - now;

如果是sunday < now，您可以在每次通过时检查，如果是，则重新计算sunday。

（如果有人想知道，如果您在周日下午计算sunday，则应该触发“确保它是未来”这一行......）

Answer 2

尝试添加这个：

var timerhelp = 'yes';
jQuery(document).ready(function($) {

     nextSunday();

if (timerhelp == 'yes') {
    var init = setInterval(animation, 900); // did change to 900, no need to calculate it more than once a second :)
}
function animation(){       
    var deadline1 = $('.time').attr('rel');
    var deadline2 = $('.time').attr('contents');
    var now = new Date();
    now = Math.floor(now / 1000);
    now = now + Math.floor(deadline2 * 60 * 60);
    var counter1 = deadline1 - now;
    var seconds1=Math.floor(counter1 % 60);
    if (seconds1 < 10 && seconds1 > 0 ){
        seconds1 = '0'+seconds1;

    }
    counter1=counter1/60;
    var minutes1=Math.floor(counter1 % 60);
    if (minutes1 < 10 && minutes1 > 0){
        minutes1 = '0'+minutes1;

    }
    counter1=counter1/60;
    var hours1=Math.floor(counter1 % 24);
    if (hours1 < 10 && hours1 > 0){
        hours1 = '0'+hours1;
    }
    counter1=counter1/24;
    var days1=Math.floor(counter1);
    if (days1 < 10 && days1 > 0){
        days1 = '0'+days1;
    }
  if(days1<0&&hours1<0&&minutes1<0&&seconds1<0){
 nextSunday();
}
    $('.time').html('<table><tbody><tr><th class="day">'+days1+'</th><th class="day">'+hours1+'</th><th class="day">'+minutes1+'</th><th class="day">'+seconds1+'</th></tr><tr><th>Days</th><th>Hours</th><th>Min</th><th>Sec</th></tr></tbody></table>');


}
});

function nextSunday(){ 
var now = new Date().getTime() / 1000; // time in seconds;
var rel = $('.time').attr('rel');
    if(parseInt(now)>parseInt(rel)){
        var n = parseInt(rel)
        while(n<parseInt(now)){
            n =  n+604800;
        }
        $('.time').attr('rel',n);
    }
}