一个Javascript函数，用于计算到特定日期或时间的剩余小时数

Question

我需要计算从今天或实际日期/时间到00:00小时的特定结束日期之间的剩余时间。

var endTime = new Date(2019,10,18,0,0,0) / 1000;
function setClock() {
    var elapsed = new Date() / 1000;
    var totalTime =  endTime - elapsed;
    var hr = parseInt(totalTime / 3600)
    var min = parseInt(totalTime / 60) % 60;
    var sec = parseInt(totalTime % 60, 10);
    var result = hr + " hours, " + min + " minutes " + sec + " seconds";
    document.getElementById('timeRemaining').innerHTML = result;
    setTimeout(setClock, 1000);
}
setClock();

Answer 1

下面是一个使用Vanilla JS的工作解决方案：

 var calcTime = setInterval(function(){
    date_future = new Date(2019,10,18,0,0,0)
    date_now = new Date();

    seconds = Math.floor((date_future - (date_now))/1000);
    minutes = Math.floor(seconds/60);
    hours = Math.floor(minutes/60);
    days = Math.floor(hours/24);

    hours = hours-(days*24);
    minutes = minutes-(days*24*60)-(hours*60);
    seconds = seconds-(days*24*60*60)-(hours*60*60)-(minutes*60);

使用JQuery→http://hilios.github.io/JQuery.countdown/examples/show-total-hours.html更容易