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54 lines
1.5 KiB
54 lines
1.5 KiB
var helperGetDateTime = require('./helperGetDateTime')
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var helperNewDate = require('./helperNewDate')
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var toStringDate = require('./toStringDate')
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var isValidDate = require('./isValidDate')
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var dateDiffRules = [
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['yyyy', 31536000000],
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['MM', 2592000000],
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['dd', 86400000],
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['HH', 3600000],
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['mm', 60000],
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['ss', 1000],
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['S', 0]
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]
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/**
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* 返回两个日期之间差距,如果结束日期小于开始日期done为fasle
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*
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* @param {Date} startDate 开始日期
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* @param {Date} endDate 结束日期或当期日期
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* @return {Object}
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*/
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function getDateDiff (startDate, endDate) {
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var startTime, endTime, item, diffTime, len, index
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var result = { done: false, time: 0 }
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startDate = toStringDate(startDate)
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endDate = endDate ? toStringDate(endDate) : helperNewDate()
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if (isValidDate(startDate) && isValidDate(endDate)) {
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startTime = helperGetDateTime(startDate)
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endTime = helperGetDateTime(endDate)
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if (startTime < endTime) {
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diffTime = result.time = endTime - startTime
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result.done = true
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for (index = 0, len = dateDiffRules.length; index < len; index++) {
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item = dateDiffRules[index]
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if (diffTime >= item[1]) {
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if (index === len - 1) {
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result[item[0]] = diffTime || 0
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} else {
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result[item[0]] = Math.floor(diffTime / item[1])
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diffTime -= result[item[0]] * item[1]
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}
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} else {
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result[item[0]] = 0
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}
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}
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}
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}
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return result
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}
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module.exports = getDateDiff
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