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Get All Dates In A Month Using JavaScript - LearnShareIT

Get All Dates In A Month Using JavaScript

Get all Dates in a Month using JavaScript

This article will show you how to get all dates in a month. We will use some methods on the Date object to get all dates in a month using JavaScript. Let’s start.

How to get all dates in a month using JavaScript

We use the date methods in JavaScript. Read more here.

First, we create a new date object, representing the month’s last day. To get the last day of the month, you need to increment the month by 1 and set the date to 0.

The following example describes how to get the last day of December 2022.

Example:

// Get the last day of Dec
const date = new Date(2022, 11 + 1, 0);
const lastDay = date.getDate();
console.log(lastDay);

Output:

31

Then we create a new array to contain all dates in a month. And finally, we create a loop to initialize each date object and push them into the newly created array.

Following is the complete code to get all dates in January 2023:

// Get All Dates In A Month
function getAllDates(year, month) {
	const day = new Date(year, month + 1, 0);

	// Get the last day of the month
	const lastDay = day.getDate();

	// Create an array containing the date objects of the month
	const dateList = [];

	// Create all date objects and push them to the 'dateList' array
	for (let i = 1; i <= lastDay; i++) {
		const newDate = new Date(year, month, i).toDateString();
		dateList.push(newDate);
	}
	return dateList;
}

const d = new Date("2023-01-01");
console.log(getAllDates(d.getFullYear(), d.getMonth()));

Output:

The getFullYear() method returns the full year, and the getMonth() method returns the month of the date object used.

Another solution is to initialize the first day of the month and create the date objects in increments until the month changes value.

Example:

// Get All Dates In A Month
function getAllDates(year, month) {
	// The first day of the month
	const day = new Date(year, month, 1);

	// Create an array containing all the date objects in the month
	const dateList = [];

	// Create all date objects and push them to the 'dateList' array
	while (day.getMonth() === month) {
		const newDate = new Date(day).toDateString();
		dateList.push(newDate);
		day.setDate(day.getDate() + 1);
	}
	return dateList;
}

const d = new Date('2023-02-01');
console.log(getAllDates(d.getFullYear(), d.getMonth()));

Output:

Summary

Through two examples with two different solutions, we have shared with you how to get all dates in a month using JavaScript. You can use any solution to apply to your project. Thank you for reading.

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