What is the moment().diff() method in moment.js?

Overview

Moment.js provides many methods and functions that enable one to manipulate and display dates according to their choice. With the diff() method, we can get the difference in milliseconds between two times.

Syntax

time1.diff(time2)
Syntax for diff() method in moment.js

Parameters

  • time1, time2: These are the times whose differences we want to get.

Return value

  • int: The value returned is an integer which is the millisecond between time1 and time2.

Example

// require the moment module
const moment = require("moment")
// create some dates and time
const time1 = moment([2010, 1, 14, 10, 25, 50, 125])
const time2 = moment(new Date)  // current date and time
const time3 = moment(1318781876406)
const time4 = moment({hour: 20, minute: 20, second: 34})
const time5 = moment([2022, 5, 17])
const time6 = moment([2025, 4, 18])
const time7 = moment().add(25, "seconds");
// get the difference between one time and another
console.log(time1.diff(time2))
console.log(time2.diff(time3))
console.log(time3.diff(time4))
console.log(time4.diff(time5))
console.log(time5.diff(time6))
console.log(time7.diff(time2))

Explanation

  • Line 2: We require the moment package.
  • Lines: 5–11: We create some dates and times.
  • Lines 14–19: Using the diff() method, we get the difference between the times and print them to the console.
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