Date.prototype.getDay()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The getDay() method of Date instances returns the day of the week for this date according to local time, where 0 represents Sunday. For the day of the month, see Date.prototype.getDate().

Try it

Syntax

js
getDay()

Parameters

None.

Return value

An integer, between 0 and 6, representing the day of the week for the given date according to local time: 0 for Sunday, 1 for Monday, 2 for Tuesday, and so on. Returns NaN if the date is invalid.

Description

The return value of getDay() is zero-based, which is useful for indexing into arrays of days, for example:

js
const valentines = new Date("1995-02-14");
const day = valentines.getDay();
const dayNames = ["Sunday", "Monday", "Tuesday" /* , … */];

console.log(dayNames[day]); // "Monday"

However, for the purpose of internationalization, you should prefer using Intl.DateTimeFormat with the options parameter instead.

js
const options = { weekday: "long" };
console.log(new Intl.DateTimeFormat("en-US", options).format(valentines));
// "Monday"
console.log(new Intl.DateTimeFormat("de-DE", options).format(valentines));
// "Montag"

Examples

Using getDay()

The weekday variable has value 1, based on the value of the Date object xmas95, because December 25, 1995 is a Monday.

js
const xmas95 = new Date("1995-12-25T23:15:30");
const weekday = xmas95.getDay();

console.log(weekday); // 1

Specifications

Specification
ECMAScript Language Specification
# sec-date.prototype.getday

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
getDay

Legend

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Full support
Full support

See also