Javascript – Check for leap year
Javascript – Check for leap year
// Retuns true if year is a leap year; otherwise false
Date.prototype.isLeapYear =
function(utc) {
var y = utc ? this.getUTCFullYear() : this.getFullYear();
return !(y % 4) && (y % 100) || !(y % 400) ? true : false;
};
To check whether 1981 is a leap year (it is not)
// Create a new date
var d = new Date();
// Set the year
d.setFullYear(1981);
// Output is false
d.isLeapYear();
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