使用JavaScript或JQuery或使用moment.js计算小时，分钟-在2个日期和时间之间

Question

I have a Razor form that has the following fields:

Startdate
Starttime (24 hr)
EndDate
EndTime (24hr)
BreakDuration (increments of 15 minutes)

StartDate and Start Time an EndDate and EndTime eventually end up combined into one SQL DateTime Field..

I need a field in the form that displays the duration - so basically the days, hours, minutes between the start and end, minus the break duration.

for example: Total Time:36:15 hrs

It would also be really useful if the End Date could be auto-incremented when the start time and end time seem to span over a day.. eg start-time 10pm -> end-time 7am.

But anyway here is my jsfiddle using moment.js

http://jsfiddle.net/beebul/kwdo9yrj/

HTML:

    <div class="conthttp://jsfiddle.net/beebul/kwdo9yrj/49/#forkrols">
    <input type="text" style="width:300px" name="momentDurationHours" id="momentDurationHours" readonly="" />&nbsp; 
    <a href="#" id="show">Show Total duration</a>
</div>

JavaScript:

    $('#show').click(function () {
    {
        var startDate = '28/10/2010'; //taken from the date and time pickers
        var endDate = '29/10/2010';
        var startTime = '12:00';
        var endTime = '17:00';
        var breakduration = '01:25:00';

        var joinStartDates = startDate + " " + startTime;
        var joinEndDates = endDate + " " + endTime;
        var totalHours = moment(joinEndDates, "DD/MM/YYYY HH:mm").diff(moment(joinStartDates, "DD/MM/YYYY HH:mm"), 'minutes');

        var breaktime = moment.duration(breakduration, 'HH:mm').asMinutes();            
        var takeBreak = totalHours - breaktime;

        //this bit below doesn't work but you get the idea...
        //var totalHoursMinusBreak = moment(takeBreak).format("HH:mm"); //trying to convert mins to HH:mm

        $('input[name="momentDurationHours"]').val(totalHours + " min - break: " + breaktime + "mins = TOTAL AS HRS?? ");
    }
});

I got tied in knots trying to use the moment.js subtract function so decided to convert to minutes first and then try and convert the final minutes total to HH:mm

Many thanks for any tips and suggestions.

Answer 1

Try something like this using moment.js

var now  = "04/09/2013 15:00:00";
var then = "02/09/2013 14:20:30";

var ms = moment(now,"DD/MM/YYYY HH:mm:ss").diff(moment(then,"DD/MM/YYYY HH:mm:ss"));
var d = moment.duration(ms);
var s = Math.floor(d.asHours()) + moment.utc(ms).format(":mm:ss");

// outputs: "48:39:30"