在javascript中计算现在和未来时间之间的时间差

Calculating time diffrence between now and future time of same day in javascript

本文关键字：时间 之间 时间差 未来 javascript 计算      更新时间：2023-09-26

我是java脚本的新手，我需要帮助如何获得现在和今天晚上9点之间的时差(假设现在的时间不超过晚上9点)。如果可能的话，我特别希望第二部分能够动态地变化/减少。H:请用ms格式。非常感谢您的帮助

使用* Updated - With Days Hours Minutes and Seconds *

showDiff();
function showDiff(){
    var date1 = new Date();    
    var date2 = new Date("2015/07/30 21:59:00");
    //Customise date2 for your required future time
    var diff = (date2 - date1)/1000;
    var diff = Math.abs(Math.floor(diff));
    var days = Math.floor(diff/(24*60*60));
    var leftSec = diff - days * 24*60*60;
    var hrs = Math.floor(leftSec/(60*60));
    var leftSec = leftSec - hrs * 60*60;
    var min = Math.floor(leftSec/(60));
    var leftSec = leftSec - min * 60;
    document.getElementById("showTime").innerHTML = "You have " + days + " days " + hrs + " hours " + min + " minutes and " + leftSec + " seconds before death.";
setTimeout(showDiff,1000);
}

你的HTML代码:

<div id="showTime"></div>

这是一些未经测试的代码，应该会给你几个小时和几分钟，直到晚上9点

var hoursToday = 21; // the 9 in 9:00 PM
var minutesToday = 0; // the 00 in 9:00 PM
var d = new Date();
var hoursNow = d.getHours();
var minutesNow = d.getMinutes();
var hoursLeft = hoursToday - hoursNow;
var minutesLeft = minutesToday - minutesNow;
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