JavaScript Date Format

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JavaScript Full DateTime Formats
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JavaScript Date Formats
https://www.w3schools.com/js/js_date_formats.asp
Date - JavaScript | MDN
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date
How to Format a Date with JavaScript – Date Formatting in JS
https://www.freecodecamp.org/news/how-to-format-a-date-with-javascript-date-formatting-in-js/
JavaScript supports multiple ways to represent and format full date-time values, with ISO 8601 being the most reliable and standardized format across browsers. The Date object is the core API for creating, parsing, and formatting dates.
Common Input Formats
ISO 8601 (Preferred): "YYYY-MM-DDTHH:mm:ss.sssZ"
new Date("2023-05-30T14:45:00Z"); // UTC time
new Date("2023-05-30T14:45:00+05:30"); // With offset
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Short Date: "MM/DD/YYYY" (browser-dependent, not recommended for cross-browser use).
Long Date: "MMM DD YYYY" or "DD MMM YYYY" (month names can be full or abbreviated).
Formatting Full Date-Time JavaScript offers built-in methods to output dates in various formats:
const date = new Date();

// ISO 8601 format (UTC)
console.log(date.toISOString()); // 2023-05-30T14:45:00.000Z

// Locale-specific full date-time
console.log(date.toLocaleString('en-US', { dateStyle: 'full', timeStyle: 'long' }));
// Example: Tuesday, May 30, 2023 at 2:45:00 PM GMT+5:30

// Custom format using Intl.DateTimeFormat
const formatter = new Intl.DateTimeFormat('en-GB', {
year: 'numeric', month: '2-digit', day: '2-digit',
hour: '2-digit', minute: '2-digit', second: '2-digit',
hour12: false, timeZone: 'UTC'
});
console.log(formatter.format(date)); // 30/05/2023, 14:45:00
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Examples from GitHub
md-akhi/SHDateTime-js • data.js
console.log(event.toString());
// Expected output: "Tue 05 Amo 1372 04:20:21 GMT+0430 (Iran Daylight Time)"`;

case "setMonth":
return `const event = new SHDate('1372-Mordad-05 04:20:30');

event.setMonth(3);
md-akhi/SHDateTime-js • data.js
console.log(new SHDate(jsonDate).toUTCString());
// Expected output: "Fri, 04 Tir 1372 19:30:00 GMT"`;

case "toLocaleDateString":
return `const event = new SHDate(SHDate.UTC(1372, 4, 5, 4, 20, 30));
const options = {
weekday: "long",
GitHub
12
Date - JavaScript | MDN - MDN Web Docs
The JavaScript specification only specifies one format to be universally supported: the date time string format, a simplification of the ISO 8601 calendar date extended form…
Mozilla Developer
Watch video
11:59
The Easiest Way to Format Dates in JavaScript
YouTube2.5K views
What is a JavaScript date?
We will be writing a usage guide soon! A JavaScript date is fundamentally specified as the time in milliseconds that has elapsed since the epoch, which is defined as the midnight at the beginning of January 1, 1970, UTC (equivalent to the UNIX epoch). This timestamp is timezone-agnostic and uniquely defines an instant in history.
developer.mozilla.org
JavaScript date formatting libraries
Intl.DateTimeFormat examples
Convert JavaScript date to string

W3School
https://www.w3schools.com › js › js_date_formats.asp
JavaScript Date Formats - W3Schools
Learn how to input and output dates in different formats in JavaScript, such as ISO, short, and long dates. See examples, warnings, and tips for parsing and converting dat…
Javascript ISO Dates
ISO 8601 is the international standard for the representation of dates and times. The ISO 8601 syntax (YYYY-MM-DD) is also the preferred JavaScript date format:
Time Zones
When setting a date, without specifying the time zone, JavaScript will use the browser's time zone. When getting a date, without specifying the time zone, the result is converted to the browser's time zone. In other words: If a date/time is created in G…
Javascript Long dates.
Long dates are most often written with a "MMM DD YYYY" syntax like this: Month and day can be in any order: And, month can be written in full (January), or abbreviated (Jan): Commas are ignored. Names are case insensitive:
Date Input - Parsing Dates
If you have a valid date string, you can use the Date.parse()method to convert it to milliseconds. Date.parse()returns the number of milliseconds between the date and January 1, 1970: You can then use the number of milliseconds to convert it to a d…
Mozilla Developer
https://developer.mozilla.org › ... › Global_Objects › Date
Date - JavaScript | MDN - MDN Web Docs
The JavaScript specification only specifies one format to be universally supported: the date time string format, a simplification of the ISO 8601 calendar date extended format.
Stack Overflow
https://stackoverflow.com › questions
How do I format a date in JavaScript? - Stack Overflow
Day.js is a minimalist JavaScript library that parses, validates, manipulates, and displays dates and times for modern browsers with a largely Moment.js-compatible API.
- Reviews: 8
If you need slightly less control over formatting than the currently accepted answer, Date#toLocaleDateString can be used to create standard locale...
2980
For custom-delimited date formats, you have to pull out the date (or time) components from a DateTimeFormat object (which is part of the ECMAScrip...
1729
If you need to quickly format your date using plain JavaScript, use getDate , getMonth + 1 , getFullYear , getHours and getMinutes : var d = new Da...
772
Use the date.format library : var dateFormat = require('dateformat'); var now = new Date(); dateFormat(now, "dddd, mmmm dS, yyyy, h:MM:ss TT"); re...
703
Well, what I wanted was to convert today's date to a MySQL friendly date string like 2012-06-23 , and to use that string as a parameter in one of m...
581
Custom formatting function: For fixed formats, a simple function make the job. The following example generates the international format YYYY-MM-DD:...
423
If you are already using jQuery UI in your project you could do it this way: var formatted = $.datepicker.formatDate("M d, yy", new Date("2014-07-0...
189
Note (2022-10): toLocaleFormat has been deprecated for some time and was removed from Firefox as of version 58. See toLocaleFormat I think you can...
170
Plain JavaScript is the best pick for small onetimers. On the other hand, if you need more date stuff, MomentJS is a great solution. For example: m...
125
Get String in YYYYMMDD format from JS date object? Jun 17, 2010
Format JavaScript date as yyyy-mm-dd - Stack Overflow
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FreeCodecamp
https://www.freecodecamp.org › news › how-to-format …
How to Format a Date with JavaScript – Date …
May 31, 2023 · Learn various techniques to format dates in JavaScript, such as using built-in methods, string concatenation, and Intl.DateTimeFormat. Also, …
GeeksForGeeks
https://www.geeksforgeeks.org › javascript › how-to...
How to Format a Date in JavaScript? - GeeksforGeeks
Jul 23, 2025 · In this approach, we will use the different date methods to get the day, date, month and year of the date object and then concat them to form a formatted date string.
Codecademy
https://www.codecademy.com › ... › javascript-date-format
How to Format a Date in JavaScript - Codecademy
Learn how to format dates in JavaScript using built-in methods and custom techniques. Explore JavaScript date format options for better control over date …
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W3docs
https://www.w3docs.com › snippets › javascript › how-t…
How to Format a JavaScript Date - W3docs
Learn how to use different methods and libraries to format dates in JavaScript. See examples of Moment.js, dateformat, and Date.toLocaleString methods with …
Built In
https://builtin.com › articles › js-formatting-date
How to Format Dates in JavaScript - Built In
Nov 12, 2024 · Learn different techniques to format dates in JavaScript, using native methods, Intl.DateTimeFormat and date libraries. See code examples, …
LogRocket Blog
https://blog.logrocket.com › javascript-date-format
How to format dates in JavaScript: Methods, libraries, …
May 8, 2025 · Learn how to work with dates in JavaScript using native methods, libraries, and locales. Compare different date formats, performance, and pitfalls …
sqlpey.com
https://www.sqlpey.com › javascript
top-30-ways-to-format-dates-in-javascript - sqlpey
Jul 23, 2025 · Explore 30 effective and SEO-friendly methods to format dates in JavaScript, from native Date methods and Intl API to external libraries like Luxon and Day.js, with practical code examples for …

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Get String in YYYYMMDD format from JS date object?	Jun 17, 2010
Format JavaScript date as yyyy-mm-dd - Stack Overflow

JavaScript Date Formats

https://www.w3schools.com/js/js_date_formats.asp

Date - JavaScript | MDN

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date

How to Format a Date with JavaScript – Date Formatting in JS

https://www.freecodecamp.org/news/how-to-format-a-date-with-javascript-date-formatting-in-js/

Examples from GitHub

How to format dates in JavaScript?

What format does JavaScript output a date in?

What is a JavaScript date?

How do I use dateformat in JavaScript?

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