How to calculate difference between two timestamps using javascript

Question

I have two timestamps and I need difference between them in hours. How to calculate them.

var resolution
var EndTime = 1541092163000
var StartTime = 1541077763000
resolution = slaEndTime - slaStartTime
var resolutionTime = ((resolution / (1000 * 60)) % 60)

Answer 1

You just need to divide rather than do times and modulus

/1000 will convert it to seconds

the first /60 will convert to minutes

and the last /60 hours

var resolution
var EndTime = 1541092163000
var StartTime = 1541077763000
resolution = EndTime - StartTime
var resolutionTime = (((resolution / 1000) / 60)/ 60)
console.log(resolutionTime)

Or you can use momentjs https://momentjs.com/

Answer 2

See the snippet below. You need to divide by 1000 then by 60 and then by 60 again to get the hours. In short you need do divide by 1000*60*60=3600000.

var endTime = 1541092163000;
var startTime = 1541077763000;
var differenceInMiliseconds = endTime - startTime;
var differenceInSeconds = differenceInMiliseconds / 1000;
var differenceInMinutes = differenceInSeconds / 60;
var differenceInHours = differenceInMinutes / 60;
console.log(differenceInHours);

// or in short
console.log((endTime - startTime) / 3600000);