Moment.js Parsing Special Formats
Moment.js is a JavaScript date library for parsing, validating, manipulating, and formatting dates. In this article, we will learn about the parsing of Special Formats in Moment.js. The ISO-8601 format is used as a standard for parsing the date and time. We can also specify HTML5 constants that can be specified in the HTML5_FMT property when parsing dates directly from the browser input elements.
Syntax:
moment(String, moment.CUSTOM_FORMAT);
Parameters: We can use the following parameters for the special formats parsing:
- String: It is the DateTime that has to be parsed.
- CUSTOM_FORMAT: A custom format can be specified here. It can also be specified using the HTML5_FMT when dates have to be directly parsed from the browser input elements.
HTML5_FMT property has the following available constants:
Constant | Format | Input Type |
---|---|---|
MONTH | YYYY-MM | <input type=”month” /> |
DATE | YYYY-MM-DD | <input type=”date” /> |
TIME | HH: mm | <input type=”time” /> |
WEEK | GGGG-[W]WW | <input type=”week” /> |
TIME_SECONDS | HH:mm:ss | <input type=”time” step=”1″ /> |
Return Value: This function returns the standard time and duration display.
Note: This will not work in the normal Node.js program because it requires the moment.js library to be installed.
Moment.js can be installed using the following command:
npm install moment
The following examples will help to understand the Special Format parsing.
Example 1:
Javascript
const moment = require( "moment" ); let special_formats1 = moment( "2021-05-07T02:30:45" , moment.ISO_8601); console.log(special_formats1); let special_formats2 = moment( "2022-09-21" , [ "YYYY-MM" , moment.ISO_8601]); console.log(special_formats2); |
Output:
Moment<2021-05-07T02:30:45+05:30> Moment<2022-09-21T00:00:00+05:30>
Example 2:
Javascript
const moment = require( "moment" ); let date1 = moment( "2022-06-15T15:00:00" , moment.HTML5_FMT.DATETIME_LOCAL_SECONDS); let date2 = moment( "2022-W50" , moment.HTML5_FMT.WEEK); let date3 = moment( "2022-05" , moment.HTML5_FMT.MONTH); console.log( "Date 1:" , date1); console.log( "Date 2:" , date2); console.log( "Date 3:" , date3); |
Output:
Date 1: Moment<2022-06-15T15:00:00+05:30> Date 2: Moment<2022-12-12T00:00:00+05:30> Date 3: Moment<2022-05-01T00:00:00+05:30>
References: https://momentjs.com/docs/#/parsing/special-formats/
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