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How to calculate hours between two times with jquery?

I am trying to calculate the clock between two points.

Below I am, but this code does not work in two ways.

1). I need .Hoursto output time in decimal format.

(for example, one and half an hour should output 1.5 and 15 minutes, should be 0.25).

2). The calculation does not currently process time values time.

(e.g., from 23:00 to 2:00 should be equal 3and NOT -21 in the present).

HTML

<input class="Time1" value="10:00" />
<input class="Time2" value="12:00" />
<input class="Hours" value="0" />

JQuery

 $(function () {
     function calculate() {
         var hours = parseInt($(".Time2").val().split(':')[0], 10) - parseInt($(".Time1").val().split(':')[0], 10);
         $(".Hours").val(hours);
     }
     $(".Time1,.Time2").change(calculate);
     calculate();
 });

http://jsfiddle.net/44NCk/

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4 answers

The easy way is to get a negative value, add 24 hours to it, and you should have a result.

var hours = parseInt($(".Time2").val().split(':')[0], 10) - parseInt($(".Time1").val().split(':')[0], 10);

// if negative result, add 24 hours
if(hours < 0) hours = 24 + hours;

: http://jsfiddle.net/44NCk/1/

, thsi : http://jsfiddle.net/44NCk/2/

function calculate() {
     var time1 = $(".Time1").val().split(':'), time2 = $(".Time2").val().split(':');
     var hours1 = parseInt(time1[0], 10), 
         hours2 = parseInt(time2[0], 10),
         mins1 = parseInt(time1[1], 10),
         mins2 = parseInt(time2[1], 10);
     var hours = hours2 - hours1, mins = 0;

     // get hours
     if(hours < 0) hours = 24 + hours;

     // get minutes
     if(mins2 >= mins1) {
         mins = mins2 - mins1;
     }
     else {
         mins = (mins2 + 60) - mins1;
         hours--;
     }

     // convert to fraction of 60
     mins = mins / 60; 

     hours += mins;
     hours = hours.toFixed(2);
     $(".Hours").val(hours);
 }
+9
 $(function () {
     function calculate() {
         var time1 = $(".Time1").val().split(':'), time2 = $(".Time2").val().split(':');
         var hours1 = parseInt(time1[0], 10), 
             hours2 = parseInt(time2[0], 10),
             mins1 = parseInt(time1[1], 10),
             mins2 = parseInt(time2[1], 10),
             seconds1 = parseInt(time1[2], 10),
             seconds2 = parseInt(time2[2], 10);
         var hours = hours2 - hours1, mins = 0, seconds = 0;
         if(hours < 0) hours = 24 + hours;
         if(mins2 >= mins1) {
             mins = mins2 - mins1;
         }
         else {
             mins = (mins2 + 60) - mins1;
             hours--;
         }

         if (seconds2 >= seconds1) {
                seconds = seconds2 - seconds1;
         }
         else {
                seconds = (seconds2 + 60) - seconds1;
            mins--;
         }

         seconds = seconds/60;
         mins += seconds;

         mins = mins / 60; // take percentage in 60
         hours += mins;
         //hours = hours.toFixed(4);
         $(".Hours").val(hours);
     }
     $(".Time1,.Time2").change(calculate);
     calculate();
 });
0
function timeobject(t){
  a = t.replace('AM','').replace('PM','').split(':');
  h = parseInt(a[0]);
  m = parseInt(a[1]);
  ampm = (t.indexOf('AM') !== -1 ) ? 'AM' : 'PM';
  return {hour:h,minute:m,ampm:ampm};
}

function timediff(s,e){
  s = timeobject(s);
  e = timeobject(e);
  e.hour = (e.ampm === 'PM' &&  s.ampm !== 'PM' && e.hour < 12) ? e.hour + 12 : e.hour;
  hourDiff = Math.abs(e.hour-s.hour);
  minuteDiff = e.minute - s.minute;

  if(minuteDiff < 0){
    minuteDiff = Math.abs(60 + minuteDiff);
    hourDiff = hourDiff - 1;
  }

  return hourDiff+':'+ Math.abs(minuteDiff);
}

difference = timediff('09:10 AM','12:25 PM');  // output 3:15
difference = timediff('09:05AM','10:20PM');  // output 13:15
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Here is the HTML

 <input type="text" name="start_time" id="start_time" value="12:00">
 <input type="text" name="end_time" id="end_time" value="10:00">
 <input type="text" name="time_duration" id="time_duration">

Here is the javascript code

function timeCalculating()
  {
    var time1 = $("#start_time").val();
    var time2 = $("#end_time").val();
    var time1 = time1.split(':');
    var time2 = time2.split(':');
    var hours1 = parseInt(time1[0], 10), 
    hours2 = parseInt(time2[0], 10),
    mins1 = parseInt(time1[1], 10),
    mins2 = parseInt(time2[1], 10);
    var hours = hours2 - hours1, mins = 0;
    if(hours < 0) hours = 24 + hours;
    if(mins2 >= mins1) {
        mins = mins2 - mins1;
    }
    else {
      mins = (mins2 + 60) - mins1;
      hours--;
    }
    if(mins < 9)
    {
      mins = '0'+mins;
    }
    if(hours < 9)
    {
      hours = '0'+hours;
    }
    $("#time_duration").val(hours+':'+mins);
  }
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