A number. If the Date object represents a valid date, an integer number, between 0 and 11, corresponding to the month of the given date according to universal time. 0 for January, 1 for February, 2 for March, and so on. Otherwise, NaN if the Date object doesn't represent a valid date.

The following example assigns the month portion of the current date to the variable month.

const today = new Date();
const month = today.getUTCMonth();

• Date.prototype.getMonth()
• Date.prototype.setUTCMonth()