How do i get time diffrence between date = "2016/03/01 11:00" to date ="2016/03/06 11:00". and also how do i formate date for above function - Vishal Singh Feb 25, 2016 at 7:30 momentjs.com will solve your problems when working with time and dates in javascript - The Demz Feb 25, 2016 at 12:27 1 To retrieve a numeric value that is already inside your computer you create an object, call an operator that tests for an int and triggers a conversion that calls a function (valueOf) that calls the class conversion method that calls a function (getTime) that finally retrieves the value. 
You can use new Date ().getTime () for getting timestamps. Then you can calculate the difference between end and start and finally transform the timestamp which is ms into s. const start = new Date ().getTime (); const end = new Date ().getTime (); const diff = end - start; const seconds = Math.floor (diff / 1000 % 60); Share Follow var now = new Date (); var hours = now.getHours ()* (60*60); var minutes = now.getMinutes ()*60; var seconds = now.getSeconds (); var secSinceMidnight = hours+minutes+seconds; Share Follow answered Jun 8, 2012 at 7:07 OptimusCrime 14.6k 12 57 96 @Mala do you mean this code fails if the daylight savings correction was applied the latest midnight?
var days = parseInt (diff.asDays ()); //84 var hours = parseInt (diff.asHours ()); //2039 hours, but it gives total hours in given miliseconds which is not expacted. hours = hours - days*24; // 23 hours var minutes = parseInt (diff.asMinutes ()); //122360 minutes,but it gives total minutes in given miliseconds which is not expacted. minutes =. Date.prototype.getTime () Returns the numeric value of the specified date as the number of milliseconds since January 1, 1970, 00:00:00 UTC. (Negative values are returned for prior times.) Date.prototype.getTimezoneOffset () Returns the time-zone offset in minutes for the current locale. Date.prototype.getUTCDate () 
now.diff (prev) returns the difference in milliseconds, in your case 60000. With moment (60000) you create a date 60000 milliseconds since 1 January 1970 UTC. If you now call .format ("H:mm:ss") then H would be influenced by the timezone of your system. So you need to ensure that you work with utc while formatting. - t.niese Nov 29, 2018 at 6:36 2 getMilliseconds () returns the milliseconds (0 to 999) of a date. Syntax Date .getMilliseconds () Parameters NONE Return Value Browser Support getMilliseconds () is an ECMAScript1 (ES1) feature. ES1 (JavaScript 1997) is fully supported in all browsers: More Examples Add zeros and colons to display the time: function addZero (x, n) {
JavaScript - Date getMilliseconds() Method Javascript date getMilliseconds() method returns the milliseconds in the specified date according to local time. The value returned by getMilliseconds() is a number between 0 and 999. The getTime () method returns the number of milliseconds since the epoch, which is defined as the midnight at the beginning of January 1, 1970, UTC. You can use this method to help assign a date and time to another Date object. This method is functionally equivalent to the valueOf () method. Try it Syntax getTime() Return value 
In JavaScript, the getTime() function returns the number of milliseconds since the Unix epoch time. That's just a computer time convention that counts the number of seconds (milliseconds in JavaScript) since midnight UTC on January 1st, 1970. Let's try to understand how you can use the getTime() function to add time to a Date object in. The moment ().diff () function is used to get the difference in milliseconds of given dates which are passed as parameters to this function. Syntax: moment ().diff (Moment|String|Number|Date|Array, String, Boolean);
The function to do that is Date.getTime (). Once both Dates have been converted, subtracting the later one from the earlier one returns the difference in milliseconds. The desired interval can then be determined by dividing that number by the corresponding number of milliseconds. Number of milliseconds since 1 January 1970 : getTimezoneOffset() Difference between local time and GMT in minutes: The difference, in minutes, between UTC and local time. The value is positive if the local timezone is behind UTC and negative if it is ahead. For example, a timezone of UTC+10 (Australian Eastern Standard Time) will return -600. 
As a JavaScript veteran you know that you have to use new Date () instead of Date () because the second one returns a string for some reason, you recall that the month of October is identified by the number 9 because we start counting the months starting at 0 and quickly figure out that subtracting two Date objects results in a number which is. Syntax getUTCMilliseconds() Return value A number. If the Date object represents a valid date, an integer between 0 and 999, representing the milliseconds portion of the given Date object according to universal time. Otherwise, NaN if the Date object doesn't represent a valid date. Not to be confused with Unix epoch time.