moment.set() - Javascript

Introduction

moment.set() is a function in the popular moment.js library for working with dates and times in JavaScript. It allows you to interact with and manipulate specific parts of a date, such as the year, month, or day, and set them to a desired value.

Usage

To use moment.set(), first, you need to have a moment object representing a date and time. You can create one using the moment() constructor, passing in a date, time, or an array of values representing them.

var now = moment(); // current date and time
var christmas = moment('2022-12-25'); // December 25th, 2022

Once you have a moment object, you can use set() to set specific parts of the date and time to a new value. The function takes two arguments: the unit you want to set (such as year, month, or day), and the value you want to set it to.

now.set('year', 2023); // now is set to Jan 1, 2023
christmas.set('month', 11); // Christmas is set to Dec 1, 2022

You can also set multiple units at the same time by passing an object with key-value pairs representing the units and their new values.

now.set({
  year: 2025,
  month: 5, // June
  date: 15,
  hours: 12,
  minutes: 30,
  seconds: 0
}); // now is set to June 15, 2025 at 12:30 PM

Conclusion

moment.set() is a powerful tool for manipulating and setting specific parts of a date and time. Whether you need to change the year, month, day, or time of an event, moment.set() provides a clear and concise way to do so. By using it in conjunction with other moment functions, you can easily create complex date and time objects to meet your programming needs.