从日期中减去时间 - 时刻 js

Question

例如，我有这个日期时间：

01:20:00 06-26-2014

我想减去这样的时间：

00:03:15

之后我想像这样格式化结果：

3 hours and 15 minutes earlier.

如何使用moment.js 做到这一点？

编辑：我试过了：

var time = moment( "00:03:15" );
var date = moment( "2014-06-07 09:22:06" );

date.subtract (time); 

但是结果和date一样

谢谢

Answer 1

Moment.subtract 不支持 Moment 类型的参数 - documentation：

moment().subtract(String, Number);
moment().subtract(Number, String); // 2.0.0
moment().subtract(String, String); // 2.7.0
moment().subtract(Duration); // 1.6.0
moment().subtract(Object);

最简单的解决方案是将时间增量指定为对象：

// Assumes string is hh:mm:ss
var myString = "03:15:00",
    myStringParts = myString.split(':'),
    hourDelta: +myStringParts[0],
    minuteDelta: +myStringParts[1];


date.subtract({ hours: hourDelta, minutes: minuteDelta});
date.toString()
// -> "Sat Jun 07 2014 06:07:06 GMT+0100"

Answer 2

有一个简单的函数subtract，矩库让我们可以从某个时间中减去时间。 使用起来也很简单。

moment(Date.now()).subtract(7, 'days'); // This will subtract 7 days from current time
moment(Date.now()).subtract(3, 'd'); // This will subtract 3 days from current time

//You can do this for days, years, months, hours, minutes, seconds
//You can also subtract multiple things simulatneously

//You can chain it like this.
moment(Date.now()).subtract(3, 'd').subtract(5. 'h'); // This will subtract 3 days and 5 hours from current time

//You can also use it as object literal
moment(Date.now()).subtract({days:3, hours:5}); // This will subtract 3 days and 5 hours from current time

希望这会有所帮助！

Answer 3

您可以使用 Moment.js Durations 创建一个更简洁的实现。无需手动解析。

var time = moment.duration("00:03:15");
var date = moment("2014-06-07 09:22:06");
date.subtract(time);
$('#MomentRocks').text(date.format())

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.4/moment.js"></script>
<span id="MomentRocks"></span>

Answer 4

我可能在这里遗漏了您的问题中的某些内容...但据我所知，通过使用 subtract 方法，这应该是您想要做的：

var timeStr = "00:03:15";
    timeStr = timeStr.split(':');

var h = timeStr[1],
    m = timeStr[2];

var newTime = moment("01:20:00 06-26-2014")
    .subtract({'hours': h, 'minutes': m})
    .format('hh:mm');

var str = h + " hours and " + m + " minutes earlier: " + newTime;

console.log(str); // 3 hours and 15 minutes earlier: 10:05

$(document).ready(function(){    
     var timeStr = "00:03:15";
        timeStr = timeStr.split(':');

    var h = timeStr[1],
        m = timeStr[2];

    var newTime = moment("01:20:00 06-26-2014")
        .subtract({'hours': h, 'minutes': m})
        .format('hh:mm');

    var str = h + " hours and " + m + " minutes earlier: " + newTime;

    $('#new-time').html(str);
})

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.9.0/moment.min.js"></script>


<p id="new-time"></p>

Answer 5

Michael Richardson 的解决方案很棒。如果你想减去日期（因为如果你搜索它，Google 会指向你这里），你也可以说：

var date1 = moment( "2014-06-07 00:03:00" );
var date2 = moment( "2014-06-07 09:22:00" );

differenceInMs = date2.diff(date1); // diff yields milliseconds
duration = moment.duration(differenceInMs); // moment.duration accepts ms
differenceInMinutes = duration.asMinutes(); // if you would like to have the output 559

Answer 6

我使用 moment.js http://momentjs.com/

var start = moment(StartTimeString).toDate().getTime();
var end = moment(EndTimeString).toDate().getTime();
var timespan = end - start;
var duration = moment(timespan);
var output = duration.format("YYYY-MM-DDTHH:mm:ss");

Answer 7

如果只想使用 moment js 进行时间减法，请参见示例...干杯?

   // subtractTimes(["05:00", "00:30", "00:20"]) --- 04:10


   subtractTimes(times) {
    let totalDiff = 0
    for (let i = 0; i < times.length; i++) {
      let duration = moment.duration(times[i]).as('milliseconds')
      if (i == 0) {
        totalDiff = duration
      }
      if (i > 0) {
        totalDiff = totalDiff - duration
      }
    }
    return moment.utc(totalDiff).format("HH:mm")
  }