.getDay()

Called from an instance of the Date class, will return the day of the week.

myDate.getDay();

The return value of getDay() will only be an integer number between 0 and 6:

• 0 meaning Sunday
• 1 meaning Monday
• 2 meaning Tueseday
• 3 meaning Wednesday
• 4 meaning Thursday
• 5 meaning Friday
• 6 meaning Saturday

To determine if it is Friday or not:

const today = new Date('June 25, 2021 10:41:30');

if (today.getDay() === 5) {
  console.log("It is Friday, let's have a coffee later!");
} else {
  console.log('It is not Friday...');
}

// Output: It is Friday, let's have a coffee later!