Check time difference in Javascript

Question

How would you check time difference from two text-boxes in Javascript?

Answer 1

I would use just getTime(); and for example Date.now() to return difference in milliseconds:

 //specified date:

var oneDate = new Date("November 02, 2017 06:00:00");

//number of milliseconds since midnight Jan 1 1970 till specified date

var oneDateMiliseconds = oneDate.getTime();

////number of milliseconds since midnight Jan 1 1970 till now

var currentMiliseconds = Date.now(); 

//return time difference in miliseconds

alert(currentMiliseconds-oneDateMiliseconds);

Answer 2

You can use moment js for this purpose. momentJs 'fromNow()' will give you any time difference from current time.

var m1 = any date time on moment format;

console.log(m1.fromNow());

Answer 3

Here's the solution that worked for me:

var date1 = new Date("08/05/2015 23:41:20");
var date2 = new Date("08/06/2015 02:56:32");

var diff = date2.getTime() - date1.getTime();

var msec = diff;
var hh = Math.floor(msec / 1000 / 60 / 60);
msec -= hh * 1000 * 60 * 60;
var mm = Math.floor(msec / 1000 / 60);
msec -= mm * 1000 * 60;
var ss = Math.floor(msec / 1000);
msec -= ss * 1000;

alert(hh + ":" + mm + ":" + ss);

Answer 4

A good solution is avaliable at

http://blogs.digitss.com/javascript/calculate-datetime-difference-simple-javascript-code-snippet/

gives the output in your desired differnece format of

days : hours : minutes : seconds .

A slightly modified version of that code is shown below

 var vdaysdiff; // difference of the dates
   var vhourDiff;
   var vmindiff;
   var vsecdiff;

   vdaysdiff = Math.floor(diff/1000/60/60/24);  // in days
   diff -= vdaysdiff*1000*60*60*24;

   vhourDiff = Math.floor(diff/1000/60/60);  // in hours
   diff -= vhourDiff*1000*60*60;

   vmindiff = Math.floor(diff/1000/60); // in minutes
   diff -= vmindiff*1000*60;

   vsecdiff= Math.floor(diff/1000);  // in seconds

   //Text formatting
   var hourtext = '00';
   if (hourDiff > 0){ hourtext = String(hourDiff);}
   if (hourtext.length == 1){hourtext = '0' + hourtext};                                                              

   var mintext = '00';                           
   if (mindiff > 0){ mintext = String(mindiff);}
   if (mintext.length == 1){mintext = '0' + mintext};

  //shows output as HH:MM ( i needed shorter duration)
   duration.value= hourtext + ':' + mintext;

Answer 5

The time diff in milliseconds

firstDate.getTime() - secondDate.getTime() 

Answer 6

grab the input values after form submission in php

$start_time = $_POST('start_time');
$end_time =$_POST('end_time');
$start = $start_time;
$end = $end_time;
$datetime1 = new DateTime($end);
$datetime2 = new DateTime($start);
//echo $datetime1->format('H:i:s');
$interval = $datetime1->diff($datetime2);
$elapsed = $interval->format('%h:%i');
$time = explode(":",$elapsed);
$hours = $time[0];
$minutes = $time[1];
$tminutes = $minutes + ($hours*60);

the variable $tminutes is total diff in minutes , working hour is $hour . this code is for php use this logic and convert this code to js