Checks if the given date is a weekend.
Date.prototype.getDay()
to check weekend by using a modulo operator (%
).d
, to use the current date as default.const isWeekend = (d = new Date()) => d.getDay() % 6 === 0;
isWeekend(); // 2018-10-19 (if current date is 2018-10-18)
JavaScript, Date
Checks if a valid date object can be created from the given values.
JavaScript, Date
Checks if the given string is valid in the simplified extended ISO format (ISO 8601).
JavaScript, Date
Checks if the given year
is a leap year.