pendel

Get the time difference between two date strings or two time strings.

Pendel: German word for pendulum.

v3.0

Version 3.0 allows you to pass in fully-qualified datetime strings to both pendel.date() and pendel.time(). Per the v2.0 API, you can still pass in 12-hour and 24-hour clocktime strings to pendel.time().

Install

$ npm install --save pendel

Usage

const duration = require('pendel');
 
// Difference in CLOCK TIMES via pendel.time()
duration.time('2:00PM', '5:30PM');
duration.time('14:00', '17:30');
duration.time('Mon Jan 01 2001 14:00:00 GMT+0000 (WET)', 'Mon Jan 01 2001 17:30:00 GMT+0000 (WET)');
/*
  {
    hours: 3,
    minutes: 30,
    seconds: 0,
    totalSeconds: 12600,
    totalMinutes: 210
  }
*/
 
// Difference in CALENDAR DATES via pendel.date()
duration.date('Mon Jan 01 2001 00:00:00 GMT+0000 (WET)', 'Thu, 03 Jan 2002 00:00:00 GMT');
duration.date('01/01/01', '01/03/02');
/*
  { years: 1,
    months: 12,
    weeks: 52,
    days: 367,
    hours: 8808,
    minutes: 528480,
    seconds: 31708800
  }
*/

API

pendel.time(startTime, endTime)

Get the time difference between startTime and endTime.

Returns an object with the following time properties:

Property	Description
hours	The difference in hours
minutes	The difference in minutes
seconds	The difference in seconds
totalSeconds	The total elapsed time in seconds
totalMinutes	The total elapsed time in minutes

startTime

Type: string

A datestring or clocktime string.

endTime

Type: string

A datestring or clocktime string.

Note: startTime & endTime recognize any of the following formats to be 12-hour or 24-hour clocktime string:

12-hour formats: (space after time optional)

• 1:00 AM
• 1:00AM
• 1:00:00 AM
• 1:00:00AM

24-hour formats:

• 00:00
• 00:00:00

pendel.date(startDate, endDate)

Get the elapsed (delta) time between startDate and endDate

Returns an object with the following Date properties:

Property	Description
years	The difference in years
months	The difference in months
weeks	The difference in weeks
days	The total elapsed time in days
hours	The total elapsed time in hours
minutes	The total elapsed time in minutes
seconds	The total elapsed time in seconds

startDate

Type: string | Date

The datestring or Date object you want to use as the start date.

endDate

Type: string | Date

The datestring or Date object you want to use as the end date.

License

MIT @ Michael Wuergler