Date

`Date.prototype.getFullYear`

Returns the year of the specified date according to local time

Syntax

JavaScript

date.getFullYear()

Return Value

A four-digit number representing the year

Examples

Basic Usage

const date = new Date('2024-06-15');
console.log(date.getFullYear()); // 2024

Practical Example

const now = new Date();
const year = now.getFullYear();
console.log(`Copyright © ${year}`);

Advanced Usage

function isLeapYear(year: number) {
  return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
}
console.log(isLeapYear(new Date().getFullYear()));

Understanding Date.prototype.getFullYear

The Date.prototype.getFullYear method in JavaScript returns the year of the specified date according to local time. It belongs to the Date object and is one of the most widely used methods for working with date values in modern JavaScript and TypeScript applications.

The method signature is date.getFullYear(). When called, it returns a four-digit number representing the year. Understanding when and how to use getFullYear() helps you write more expressive, readable code.

Common use cases for Date.prototype.getFullYear include data transformation, input validation, API response processing, and building reusable utility functions. It works well alongside related methods like date-getmonth, date-getdate, date-setfullyear, enabling you to chain operations together for complex data manipulation pipelines.

Browser support for Date.prototype.getFullYear is excellent across all modern browsers including Chrome, Firefox, Safari, and Edge. It is also fully supported in Node.js and Deno. For older environments, transpilation with Babel or a polyfill may be needed.