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// 明天几号
export function getNextDay(tempTime) {
if (!tempTime) {
tempTime = new Date()
}
tempTime.setHours(24, 0, 0, 0, 0);
return tempTime;
}
// 昨天几号
export function getBeforeDay(tempTime) {
if (!tempTime) {
tempTime = new Date()
}
tempTime.setHours(-24, 0, 0, 0, 0);
return tempTime;
}
// 获取当前月份应该有多少天
export function getCurMonthDayNum(time) {
if (!time) {
time = new Date()
}
let day = 31;
let month = time.getMonth() + 1
let year = time.getFullYear()
if ([1, 3, 5, 7, 8, 10, 12].indexOf(month) != -1) {
day = 31;
} else if ([4, 6, 9, 11].indexOf(month) != -1) {
day = 30;
} else if (year % 4 == 0) {
day = 29
} else {
day = 28
}
return day
}
/**
* 或者某个时间在其月份还剩多少天时间
* @param {Object} time 时间
*/
export function getElseMonthDayNum(time) {
if (!time) {
time = new Date()
}
let total = getCurMonthDayNum(time);
let day = time.getDate()
return total - day;
}
/**
* 时间格式化
*/
export function timeFormat(date, fmt = 'yyyy/MM/dd HH:mm:ss') {
if (!date) {
return ''
}
// dayjs
if (typeof date === 'string') {
date = date.replace('T', ' ').replace('Z', '');
date = new Date(date.replace(/-/g, '/'))
}
if (typeof date === 'number') {
date = new Date(date)
}
var o = {
'M+': date.getMonth() + 1,
'd+': date.getDate(),
'h+': date.getHours() % 12 === 0 ? 12 : date.getHours() % 12,
'H+': date.getHours(),
'm+': date.getMinutes(),
's+': date.getSeconds(),
'q+': Math.floor((date.getMonth() + 3) / 3),
'S': date.getMilliseconds()
}
var week = {
'0': '\u65e5',
'1': '\u4e00',
'2': '\u4e8c',
'3': '\u4e09',
'4': '\u56db',
'5': '\u4e94',
'6': '\u516d'
}
if (/(y+)/.test(fmt)) {
fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))
}
if (/(E+)/.test(fmt)) {
fmt = fmt.replace(RegExp.$1, ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? '\u661f\u671f' : '\u5468') :
'') +
week[date.getDay() + ''])
}
for (var k in o) {
if (new RegExp('(' + k + ')').test(fmt)) {
fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (('00' + o[k]).substr(('' + o[k])
.length)))
}
}
return fmt
}
/**
* 获取距离今天多少天的时间
* @param {Object} days 据今天的时间长度
*/
export function geRecentDay(days, time) {
if (!time) {
time = new Date()
}
let dayList = []
let curIndex = -1;
// 补充这周的前几天时间
let bbDay = new Date(time);
bbDay.setHours(0, 0, 0, 0);
let week = bbDay.getDay() // 当前周几
week = (week - 1) < 0 ? 0 : (week - 1)
let bList = [];
for (var i = week; i >= 0; i--) {
let beforeDay = getBeforeDay(bbDay)
bList.push(timeFormat(beforeDay))
bbDay = beforeDay;
}
bList.reverse()
dayList = dayList.concat(bList)
// 时间长度
let nnDay = new Date(time);
nnDay.setHours(0, 0, 0, 0);
curIndex = dayList.length // 今天的索引
let elseDay = days || getElseMonthDayNum(nnDay);
for (var i = 0; i <= elseDay; i++) {
dayList.push(timeFormat(nnDay))
let nextDay = getNextDay(nnDay)
nnDay = nextDay;
}
return {
list: dayList,
index: curIndex
}
}