JavaScript Date getDay() Method

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JavaScript Date getDay() method returns the “day of the week(0-6) for this date according to local time, where 0 represents Sunday.”

Syntax

getDay()

Return value

It returns an integer between 0 and 6, representing the day of the week for the given date according to local time: 0 for Sunday and 6 for Saturday. Returns NaN if the date is invalid.

Example 1: Display the day of the week for today

let date = new Date();

let days = ["Sunday", "Monday", "Tuesday",
            "Wednesday", "Thursday", "Friday", "Saturday"];

let dayName = days[date.getDay()];

console.log("Today is " + dayName + ".");

Output

Today is Tuesday.

Example 2: Find out which day of the week a specific date was

let specificDate = new Date("July 4, 2022");

let days = ["Sunday", "Monday", "Tuesday", "Wednesday",
            "Thursday", "Friday", "Saturday"];

let dayName = days[specificDate.getDay()];

console.log("July 4, 2022 was a " + dayName + ".");

Output

July 4, 2022 was a Monday.

Example 3: Display the next day of the week

let date = new Date();

let days = ["Sunday", "Monday", "Tuesday", "Wednesday",
            "Thursday", "Friday", "Saturday"];

let nextDayIndex = (date.getDay() + 1) % 7;

let nextDayName = days[nextDayIndex];

console.log("Tomorrow will be " + nextDayName + ".");

Output

Tomorrow will be Wednesday.

Browser Compatibility

Chrome Edge Firefox Safari Opera IE
Yes Yes Yes Yes Yes Yes

That’s it!

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How to Generate Dates Between Two Dates in JavaScript

How to Add Days to Date in JavaScript

How to Compare Two Dates in JavaScript

How to Subtract Days from a Date in JavaScript

How to Format Dates in JavaScript

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