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24 lines
604 B
24 lines
604 B
var parse = require('../parse/index.js') |
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/** |
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* @category Year Helpers |
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* @summary Is the given date in the leap year? |
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* |
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* @description |
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* Is the given date in the leap year? |
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* |
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* @param {Date|String|Number} date - the date to check |
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* @returns {Boolean} the date is in the leap year |
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* |
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* @example |
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* // Is 1 September 2012 in the leap year? |
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* var result = isLeapYear(new Date(2012, 8, 1)) |
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* //=> true |
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*/ |
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function isLeapYear (dirtyDate) { |
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var date = parse(dirtyDate) |
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var year = date.getFullYear() |
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return year % 400 === 0 || year % 4 === 0 && year % 100 !== 0 |
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} |
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module.exports = isLeapYear
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