Javascript 倒计时

IT技术 javascript
2021-03-12 19:17:13

我已经在网上搜索过,但所有现成的都是您指定日期的地方,它会倒计时到该日期。我需要的是可以简单地从“27 分 43 秒”(以这种格式)倒计时到 0 的东西,只要他们登陆页面,有人有任何可用的片段吗?

6个回答

像这样的事情应该可以解决问题。我很无聊,决定自己做而不是谷歌搜索。只需在顶部设置分钟和秒,并将 onload 内的 countdown 调用更改为您希望它更新的元素的 id。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
                    "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <script>
    var interval;
    var minutes = 1;
    var seconds = 5;
    window.onload = function() {
        countdown('countdown');
    }

    function countdown(element) {
        interval = setInterval(function() {
            var el = document.getElementById(element);
            if(seconds == 0) {
                if(minutes == 0) {
                    el.innerHTML = "countdown's over!";                    
                    clearInterval(interval);
                    return;
                } else {
                    minutes--;
                    seconds = 60;
                }
            }
            if(minutes > 0) {
                var minute_text = minutes + (minutes > 1 ? ' minutes' : ' minute');
            } else {
                var minute_text = '';
            }
            var second_text = seconds > 1 ? 'seconds' : 'second';
            el.innerHTML = minute_text + ' ' + seconds + ' ' + second_text + ' remaining';
            seconds--;
        }, 1000);
    }
    </script>
</head>
<body>
<div id='countdown'></div>
</body>
</html>
赞成,但应该是 if(seconds == -1) and seconds = 59 否则你有,例如,5:01, 4:60, 4:59 ...
2021-04-15 19:17:13

我做了一个简单的倒计时,你可以使用。

它正在生成格式:

第 X 天、X 小时、X 分钟、X 秒

JS:

countIt();

function countIt(){
    year = 2013;
    month = 05;
    day = 28;
    hours = 12;
    minutes = 00;
    seconds = 00;

    setTimeout(function(){
    endDate = new Date(year, (month - 1), day, hours, minutes, seconds, 00);
    thisDate  = new Date();
    thisDate  = new Date(thisDate.getFullYear(), thisDate.getMonth(), thisDate.getDate(), thisDate.getHours(), thisDate.getMinutes(), thisDate.getSeconds(), 00, 00);

    var daysLeft = parseInt((endDate-thisDate)/86400000);
    var hoursLeft = parseInt((endDate-thisDate)/3600000); 
    var minutsLeft = parseInt((endDate-thisDate)/60000);
    var secondsLeft = parseInt((endDate-thisDate)/1000);

    seconds = minutsLeft*60;
    seconds = secondsLeft-seconds;

    minutes = hoursLeft*60;
    minutes = minutsLeft-minutes;

    hours = daysLeft*24;
    hours = (hoursLeft-hours) < 0 ? 0 : hoursLeft-hours;

    days = daysLeft;

    startCount(days, hours, minutes,seconds);
    }, 1000);
}

function startCount(days, hours, minutes, seconds){
    document.getElementById("counter").innerHTML="DAYS "+days+", HOURS "+hours+", MINUTES "+minutes+", SECONDS: "+seconds;
    countIt();
}

HTML:

<div id="counter"></div>

点击这里观看直播

thisDate.getDay()应该是thisDate.getDate();)
2021-04-16 19:17:13

我认为你正在寻找的东西像这样

嗯,为什么不直接使用这个:

    <div id="countdown">countdown displayed here</div>
    <script type="text/javascript">                               
        $(document).ready(function() {
            //time to count down
            hoursToGo = 0;
            minutesToGo = 27;
            secondsToGo = 43;

            var startTime = new Date();              
            var endTime = new Date();
            endTime.setHours(
                startTime.getHours() + hoursToGo,
                startTime.getMinutes() + minutesToGo, 
                startTime.getSeconds() + secondsToGo, 
                startTime.getMilliseconds()
            );

            //function to update counter
            function update(){
                var currentTime = new Date();

                var remainingTime = new Date();
                remainingTime.setTime(endTime.getTime()-currentTime.getTime());

                $("#countdown").text(remainingTime.getHours()+":"+remainingTime.getMinutes()+":"+remainingTime.getSeconds());

                //call itself every second
                setTimeout(update,1000);
            }

            //start the countdown
            update();                
        });
    </script>

编辑 作为一个附加的想法,您可以通过将结束时间作为隐藏表单元素的值传递到下一页来在多个页面上实现这一点。或者至少这就是我要做的;-)

jCounter是一个插件,它也接受自定义值来显示您想要的任何倒计时