求救：需要获取 2019-12-20 到 2020-3-2 号之间所有日期的列表，结果像这样：[2019-12-20，2019-12-21，2019-12-22，…2020-3-2]。请问怎样才能实现呢？存在跨月跨年的问题。
我现在考虑 通过 new Date 获得当前日期，然后每次加1，但到2019-12-31号再加1，怎么能跳到 2020-1-1 而不能是2019-12-32 呢？
直接写
function time(time) {
var date = new Date(time || (new Date().getTime() + 8 * 3600 * 1000));
return date.toJSON().substr(0, 19).replace(‘T’, ’ ');
}
var start = ‘2019-10-01’, end = ‘2022-10-01’, st = new Date(start).getTime(), et = new Date(end).getTime(), dates = [], dayTimestamp = 86400 * 1000
for (var i = 0; i <= (et - st) / dayTimestamp; i++) {
dates.push(time(st + i * dayTimestamp).split(’ ').shift())
}
console.log(res)
=============================================================
封装
var RangeDate = {
dates: [],
onlyDates: [],
onlyDate: !1,
callback: () => { },
dTimestamp: 86400 * 1000,
time(time) {
var date = new Date(time || (new Date().getTime() + 8 * 3600 * 1000));
return date.toJSON().substr(0, 19).replace(‘T’, ’ ');
},
getRangeDateA(options) {
var st = new Date(options.sD).getTime(), et = new Date(options.eD).getTime()
this.onlyDate = options.onlyDate == !0 ? !0 : !1
this.callback = options.callback ? options.callback : this.callback
this.dates = []
this.onlyDates = []
for (var i = 0; i <= (et - st) / this.dTimestamp; i++) {
var tmp = this.time(st + i * this.dTimestamp)
this.dates.push(tmp)
this.onlyDates.push(tmp.split(’ ').shift())
}
return this
},
getRangeDate(options) {
var t = this
return new Promise((rs, rj) => {
var d = t.getRangeDateA(options).result()
this.callback(d)
rs(d)
})
},
result() {
return this.onlyDate ? this.onlyDates : this.dates
}
}
==================================================
使用例子
链式风格
console.log(RangeDate.getRangeDateA({
sD: ‘2019-10-01’,
eD: ‘2022-10-01’,
onlyDate: !0
}).result()
)
callback风格:
RangeDate.getRangeDate({
sD: ‘2019-10-01’,
eD: ‘2022-10-01’,
onlyDate: !0,
callback: function (res) {
console.log(res)
}
})
Promise风格
RangeDate.getRangeDate({
sD: ‘2019-10-01’,
eD: ‘2022-10-01’,
onlyDate: !0
}).then(res => {
console.log(res)
})
async / await 风格
console.log(await RangeDate.getRangeDate({
sD: ‘2019-10-01’,
eD: ‘2022-10-01’,
onlyDate: !0
})
)
// startDate: 计划开始时间； endDate：计划结束时间；dayLength：每隔几天，0-代表每天，1-代表日期间隔一天const getDates = (startDate, endDate, dayLength) => { let result = []; result.push(startDate); for (let i = 0; ; i++) { let getDate = getTargetDate(startDate, dayLength); startDate = getDate; if (getDate <= endDate) { result.push(getDate); } else { break; } } return result;}// startDate: 开始时间；dayLength：每隔几天，0-代表获取每天，1-代表日期间隔一天const getTargetDate = (date, dayLength) => { dayLength = dayLength + 1; let tempDate = new Date(date); tempDate.setDate(tempDate.getDate() + dayLength); let year = tempDate.getFullYear(); let month = tempDate.getMonth() + 1 < 10 ? "0" + (tempDate.getMonth() + 1) : tempDate.getMonth() + 1; let day = tempDate.getDate() < 10 ? "0" + tempDate.getDate() : tempDate.getDate(); return year + "-" + month + "-" + day;} |
module.exports = { getDates: getDates} |
console.log(util.getDates("2019-12-20","2020-03-02",0)); |
网上找了这个轮子，封装了一下，测试可用
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