Simple Date Formater for JavaScript. It allows for formatting date → text .
You can easily format date with specific patterns like as follows.
yyyyMMdd'T'HHmmssXX → 20180717T120856+0900
install module
npm install @riversun/simple-date-format
import module
import SimpleDateFormat from "@riversun/simple-date-format";or
require module
const SimpleDateFormat = require('@riversun/simple-date-format');<script src="https://cdn.jsdelivr.net/npm/@riversun/simple-date-format/lib/simple-date-format.js"></script>const date = new Date('2018/07/17 12:08:56');
const sdf = new SimpleDateFormat();
console.log(sdf.formatWith("yyyy-MM-dd'T'HH:mm:ssXXX", date));//to be "2018-07-17T12:08:56+09:00"const date = new Date('2018/07/17 12:08:56');
const sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
console.log(sdf.format(date));//to be "2018-07-17T12:08:56+09:00"The following examples show how date and time patterns are interpreted. The given date and time are 2018-07-17 12:08:56 local time in Tokyo/Japan time zone.
| Letter(s) | Date or Time Component | Examples |
| yyyy | Year | 2018 |
| yy | 18 | |
| M | Month in year | 7 |
| MM | 07 | |
| MMM | Month name | Jul |
| d | Day in month | 17 |
| dd | 17 | |
| a | Am/pm marker | PM |
| H | Hour in day (0-23) | 12 |
| HH | 12 | |
| E | day of week | Tue |
| h | Hour in am/pm (1-12) | 12 |
| hh | 12 | |
| m | Minute in hour | 8 |
| mm | 08 | |
| s | Second in minute | 56 |
| ss | 56 | |
| SSS | Millisecond | 789 |
| Z | Timezone(RFC822) | +0900 |
| X | Timezone(ISO8601) | +09 |
| XX | +0900 | |
| XXX | +09:00 | |
| ' ' | Strings(Escaped) | |
| '' | Single Quote |
| Format String | Example |
| yyyyMMdd'T'HHmmssXX (ISO 8601) |
20180717T120856+0900 |
| yyyy-MM-dd'T'HH:mm:ssXXX (ISO 8601) |
2018-07-17T12:08:56+09:00 |
| E, dd MMM yyyy HH:mm:ss Z | Tue, 17 Jul 2018 12:08:56 +0900 |
| yyyy.MM.dd 'at' hh:mm:ss Z | 2018.07.17 at 12:08:56 +0900 |
| EEE, MMM d, ''yy | Tue, Jul 17, '18 |
| h:mm a | 12:08 PM |
| hh 'o''''clock' a, X | 12 o'clock PM, +09 |
| yyyy年M月d日 H時m分s秒 | 2018年7月17日 12時8分56秒 |
| yyyy年MM月dd日 HH時mm分ss秒 | 2018年07月17日 12時08分56秒 |
| yyyyMMddHHmmssSSS | 20180717120856789 |
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