| 1 | var isDate = require('./isDate')
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| 2 | var toStringDate = require('./toStringDate')
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| 3 |
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| 4 | var helperNewDate = require('./helperNewDate')
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| 5 |
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| 6 | /**
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| 7 | * 判断是否闰年
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| 8 | *
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| 9 | * @param {Date} date 日期或数字
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| 10 | * @return {Boolean}
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| 11 | */
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| 12 | function isLeapYear (date) {
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| 13 | var year
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| 14 | var currentDate = date ? toStringDate(date) : helperNewDate()
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| 15 | if (isDate(currentDate)) {
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| 16 | year = currentDate.getFullYear()
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| 17 | return (year % 4 === 0) && (year % 100 !== 0 || year % 400 === 0)
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| 18 | }
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| 19 | return false
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| 20 | }
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| 21 |
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| 22 | module.exports = isLeapYear
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