Convert a month number to name in JavaScript

In this tutorial, we are going to learn about how to convert a month number to a name from the JavaScript date object.

To convert a month number to a name, we can use the following function:

This below function takes the month number (like 1 or 2) as an argument and returns the month name in string format.

function getMonthName(month){
  const d = new Date();
  d.setMonth(month-1);
  const monthName = d.toLocaleString("default", {month: "long"});
  return monthName;
}

console.log(getMonthName(12)); // "December"

Let’s learn how the above function works:

1. First we initialized a JavaScript new Date() constructor.

2. We invoked a setMonth() method on JavaScript date Object by passing the month-1 as an argument.

Note: In JavaScript, the month number starts from 0 so we substracted it with -1 to get in JavaScript format.

3. The toLocaleString() method is used to get the month name in string format

You can also read, how to get a current month name in JavaScript.