获取一天的开始时间

Installation

yarn add --dev @dfeidao/fd-an000054

时间格式

| 单位 | 格式 | 示例 | |--------------------------------|-------|---------------------------------------| | 公元 | G..GGG | AD, BC | | | GGGG | Anno Domini, Before Christ | | | GGGGG | A, B | | 年 | y | 44, 1, 1900, 2017 | | | yo | 44th, 1st, 0th, 17th | | | yy | 44, 01, 00, 17 | | | yyy | 044, 001, 1900, 2017 | | | yyyy | 0044, 0001, 1900, 2017 | | | yyyyy | ... | | Local week-numbering year | Y | 44, 1, 1900, 2017 | | | Yo | 44th, 1st, 1900th, 2017th | | | YY | 44, 01, 00, 17 | | | YYY | 044, 001, 1900, 2017 | | | YYYY | 0044, 0001, 1900, 2017 | | | YYYYY | ... | | ISO week-numbering year | R | -43, 0, 1, 1900, 2017 | | | RR | -43, 00, 01, 1900, 2017 | | | RRR | -043, 000, 001, 1900, 2017 | | | RRRR | -0043, 0000, 0001, 1900, 2017 | | | RRRRR | ... | | Extended year | u | -43, 0, 1, 1900, 2017 | | | uu | -43, 01, 1900, 2017 | | | uuu | -043, 001, 1900, 2017 | | | uuuu | -0043, 0001, 1900, 2017 | | | uuuuu | ... | | 刻 | Q | 1, 2, 3, 4 | | | Qo | 1st, 2nd, 3rd, 4th | | | QQ | 01, 02, 03, 04 | | | QQQ | Q1, Q2, Q3, Q4 | | | QQQQ | 1st quarter, 2nd quarter, ... | | | QQQQQ | 1, 2, 3, 4 | | Quarter (stand-alone) | q | 1, 2, 3, 4 | | | qo | 1st, 2nd, 3rd, 4th | | | qq | 01, 02, 03, 04 | | | qqq | Q1, Q2, Q3, Q4 | | | qqqq | 1st quarter, 2nd quarter, ... | | | qqqqq | 1, 2, 3, 4 | | 月 | M | 1, 2, ..., 12 | | | Mo | 1st, 2nd, ..., 12th | | | MM | 01, 02, ..., 12 | | | MMM | Jan, Feb, ..., Dec | | | MMMM | January, February, ..., December | | | MMMMM | J, F, ..., D | | Month (stand-alone) | L | 1, 2, ..., 12 | | | Lo | 1st, 2nd, ..., 12th | | | LL | 01, 02, ..., 12 | | | LLL | Jan, Feb, ..., Dec | | | LLLL | January, February, ..., December | | | LLLLL | J, F, ..., D | | 一年中的第几周 | w | 1, 2, ..., 53 | | | wo | 1st, 2nd, ..., 53th | | | ww | 01, 02, ..., 53 | | ISO week of year | I | 1, 2, ..., 53 | | | Io | 1st, 2nd, ..., 53th | | | II | 01, 02, ..., 53 | | 一月中的第几天 | d | 1, 2, ..., 31 | | | do | 1st, 2nd, ..., 31st | | | dd | 01, 02, ..., 31 | | 一年中的第几天 | D | 1, 2, ..., 365, 366 | | | Do | 1st, 2nd, ..., 365th, 366th | | | DD | 01, 02, ..., 365, 366 | | | DDD | 001, 002, ..., 365, 366 | | | DDDD | ... | | Day of week (formatting) | E..EEE | Mon, Tue, Wed, ..., Su | | | EEEE | Monday, Tuesday, ..., Sunday | | | EEEEE | M, T, W, T, F, S, S | | | EEEEEE | Mo, Tu, We, Th, Fr, Su, Sa | | ISO day of week (formatting) | i | 1, 2, 3, ..., 7 | | | io | 1st, 2nd, ..., 7th | | | ii | 01, 02, ..., 07 | | | iii | Mon, Tue, Wed, ..., Su | | | iiii | Monday, Tuesday, ..., Sunday | | | iiiii | M, T, W, T, F, S, S | | | iiiiii | Mo, Tu, We, Th, Fr, Su, Sa | | 一周中的第几天 | e | 2, 3, 4, ..., 1 | | | eo | 2nd, 3rd, ..., 1st | | | ee | 02, 03, ..., 01 | | | eee | Mon, Tue, Wed, ..., Su | | | eeee | Monday, Tuesday, ..., Sunday | | | eeeee | M, T, W, T, F, S, S | | | eeeeee | Mo, Tu, We, Th, Fr, Su, Sa | | Local day of week (stand-alone) | c | 2, 3, 4, ..., 1 | | | co | 2nd, 3rd, ..., 1st | | | cc | 02, 03, ..., 01 | | | ccc | Mon, Tue, Wed, ..., Su | | | cccc | Monday, Tuesday, ..., Sunday | | | ccccc | M, T, W, T, F, S, S | | | cccccc | Mo, Tu, We, Th, Fr, Su, Sa | | 上午, 下午 | a..aaa | AM, PM | | | aaaa | a.m., p.m. | | | aaaaa | a, p | | 上午, 下午, 中午, 子夜 | b..bbb | AM, PM, noon, midnight | | | bbbb | a.m., p.m., noon, midnight | | | bbbbb | a, p, n, mi | | Flexible day period | B..BBB | at night, in the morning, ... | | | BBBB | at night, in the morning, ... | | | BBBBB | at night, in the morning, ... | | 小时 [1-12] | h | 1, 2, ..., 11, 12 | | | ho | 1st, 2nd, ..., 11th, 12th | | | hh | 01, 02, ..., 11, 12 | | 小时 [0-23] | H | 0, 1, 2, ..., 23 | | | Ho | 0th, 1st, 2nd, ..., 23rd | | | HH | 00, 01, 02, ..., 23 | | 小时 [0-11] | K | 1, 2, ..., 11, 0 | | | Ko | 1st, 2nd, ..., 11th, 0th | | | KK | 1, 2, ..., 11, 0 | | 小时 [1-24] | k | 24, 1, 2, ..., 23 | | | ko | 24th, 1st, 2nd, ..., 23rd | | | kk | 24, 01, 02, ..., 23 | | 分钟 | m | 0, 1, ..., 59 | | | mo | 0th, 1st, ..., 59th | | | mm | 00, 01, ..., 59 | | 秒 | s | 0, 1, ..., 59 | | | so | 0th, 1st, ..., 59th | | | ss | 00, 01, ..., 59 | | Fraction of second | S | 0, 1, ..., 9 | | | SS | 00, 01, ..., 99 | | | SSS | 000, 0001, ..., 999 | | | SSSS | ... | | 时区 (ISO-8601 w/ Z) | X | -08, +0530, Z | | | XX | -0800, +0530, Z | | | XXX | -08:00, +05:30, Z | | | XXXX | -0800, +0530, Z, +123456 | | | XXXXX | -08:00, +05:30, Z, +12:34:56 | | 时区 (ISO-8601 w/o Z) | x | -08, +0530, +00 | | | xx | -0800, +0530, +0000 | | | xxx | -08:00, +05:30, +00:00 | | | xxxx | -0800, +0530, +0000, +123456 | | | xxxxx | -08:00, +05:30, +00:00, +12:34:56 | | 时区 (GMT) | O...OOO | GMT-8, GMT+5:30, GMT+0 | | | OOOO | GMT-08:00, GMT+05:30, GMT+00:00 | | 时区 (specific non-locat.) | z...zzz | GMT-8, GMT+5:30, GMT+0 | | | zzzz | GMT-08:00, GMT+05:30, GMT+00:00 | | 以秒为单位的时间戳 | t | 512969520 | | | tt | ... | | 以毫秒为单位的时间戳 | T | 512969520900 | | | TT | ... | | Long localized date | P | 5/29/53 | | | PP | May 29, 1453 | | | PPP | May 29th, 1453 | | | PPPP | Sunday, May 29th, 1453 | | Long localized time | p | 12:00 AM | | | pp | 12:00:00 AM | | | ppp | 12:00:00 AM GMT+2 | | | pppp | 12:00:00 AM GMT+02:00 | | Combination of date and time | Pp | 5/29/53, 12:00 AM | | | PPpp | May 29, 1453, 12:00 AM | | | PPPppp | May 29th, 1453 at ... | | | PPPPpppp | Sunday, May 29th, 1453 at ... |

Example

import an54 from '@dfeidao/fd-an000054';
const now_date = new Date().getTime(); // 1551168254155
const new_date = an54(now_date);  // 1551110400000