23 lines
536 B
JavaScript
23 lines
536 B
JavaScript
var isDate = require('./isDate')
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var toStringDate = require('./toStringDate')
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var helperNewDate = require('./helperNewDate')
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/**
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* 判断是否闰年
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*
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* @param {Date} date 日期或数字
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* @return {Boolean}
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*/
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function isLeapYear (date) {
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var year
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var currentDate = date ? toStringDate(date) : helperNewDate()
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if (isDate(currentDate)) {
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year = currentDate.getFullYear()
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return (year % 4 === 0) && (year % 100 !== 0 || year % 400 === 0)
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}
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return false
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}
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module.exports = isLeapYear
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