Nodejs中的时差？

Time difference in Nodejs?

提问by Alosyius

Im trying to figure out a way to get the time difference in seconds between two dates.

我试图找出一种方法来获得两个日期之间的时差（以秒为单位）。

For example, difference in seconds between:

例如，以下之间的秒差：

2013-5-11 8:37:18

2013-5-11 10:37:18

Tried:

尝试：

function timeDifference(laterdate, earlierdate) {
    var difference = laterdate.getTime() - earlierdate.getTime();
    var daysDifference = Math.floor(difference/1000/60/60/24);
    difference -= daysDifference*1000*60*60*24
    var hoursDifference = Math.floor(difference/1000/60/60);
    difference -= hoursDifference*1000*60*60
    var minutesDifference = Math.floor(difference/1000/60);
    difference -= minutesDifference*1000*60
    var secondsDifference = Math.floor(difference/1000);

    return secondsDifference;
}

But that does not work in Nodejs, error with

但这在 Nodejs 中不起作用，错误为

getTime()

获取时间（）

function not being found

找不到函数

回答by Noah

var moment = require('moment')
var startDate = moment('2013-5-11 8:73:18', 'YYYY-M-DD HH:mm:ss')
var endDate = moment('2013-5-11 10:73:18', 'YYYY-M-DD HH:mm:ss')
var secondsDiff = endDate.diff(startDate, 'seconds')
console.log(secondsDiff)

You will need the moment.jsmodule

您将需要moment.js模块

npm install -S moment

回答by rogierschouten

The timezonecomplete module has support for date differences, even with dates in different time zones. It returns a Duration object which is unit-aware, not just a "number" that represents "milliseconds":

timezonecomplete 模块支持日期差异，即使日期位于不同时区。它返回一个单位感知的 Duration 对象，而不仅仅是一个代表“毫秒”的“数字”：

var tc = require("timezonecomplete");   

var start = new tc.DateTime("2014-06-26T12:00:00 Europe/Amsterdam");
var end = new tc.DateTime("2014-06-26T12:00:00 UTC");

var duration = end.diff(start);  // unit-aware duration

console.log(duration.minutes()); // -120
console.log(duration.hours()); // -2

回答by Daniyal

It will check the system time and find the difference.

它将检查系统时间并找出差异。

var moment = require('moment')
var firstTime = moment();

setInterval(someTask,1000);
function someTask(){
  var secondTime = moment();
  var timeDifference = secondTime.diff(firstTime, 'seconds')
  console.log(timeDifference)
}`

回答by aswin prabhakar

If you just want to set timeout on a loop as I did, you don't need to use momentjs at all. Try the following.

如果您只想像我一样在循环上设置超时，则根本不需要使用 momentjs。请尝试以下操作。

let timeout = 3; //seconds
console.log("start:" + new Date());
let start = Number(Date.now());
let end = start + timeout * 1000;
while (Number(Date.now()) < end) {
  // your code here
}

console.log("end:" + new Date());

PS: I understand that this post does not quite answer the question asked, but this is the link popping up when you google 'time difference in nodejs'.

PS：我知道这篇文章并没有完全回答所提出的问题，但这是当您在 google 上搜索“nodejs 中的时差”时弹出的链接。

回答by Shaikh Shahid

Get the remaining days :

获取剩余天数：

var moment = require('moment');

var startDate = moment(new Date()).format("YYYY-MM-DD");

var endDate = moment(new Date("Tue Aug 27 2015 09:13:40 GMT+0530 (IST)")).format("YYYY-MM-DD");

var remainingDate = moment(endDate).diff(startDate, 'days');

console.log(remainingDate) // at time of posting, 106 days

回答by K.Suthagar

We can use this optimized code too,

我们也可以使用这个优化的代码，

function calculateDays(startDate,endDate)
{
   var start_date = moment(startDate, 'YYYY-MM-DD HH:mm:ss');
   var end_date = moment(endDate, 'YYYY-MM-DD HH:mm:ss');
   var duration = moment.duration(end_date.diff(start_date));
   var days = duration.asDays();       
   return days;
}

Here you need to install momentand want to import before using.

这里需要安装moment，想导入才使用。

回答by M. Hamza Rajput

Moment.js

时刻.js

const MOMENT = require('moment');

const TimeDiff = ( startTime, endTime, format ) => {

    startTime = MOMENT( startTime, 'YYYY-MM-DD HH:mm:ss' );
    endTime = MOMENT( endTime, 'YYYY-MM-DD HH:mm:ss' );
    return endTime.diff( startTime, format);
}

let startTime = new Date('2013-5-11 8:37:18');
let endTime = new Date('2013-5-11 10:37:18');

console.log( TimeDiff(startTime, endTime, 'seconds'));