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. Note: While the time value at the heart of a Date object is UTC, the basic methods to fetch the date and time or its components all work in the local (i.e., host system) time zone and offset.

In JavaScript, date objects are created with new Date(). new Date() returns a date object with the current date and time. ... The get methods above return Local time.

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// reduced time precision (2ms) in Firefox 60 new Date().getTime(); // Might be: // 1519211809934 // 1519211810362 // 1519211811670 // … // reduced time precision with `privacy.resistFingerprinting` enabled new Date().getTime(); // Might be: // 1519129853500 // 1519129858900 // 1519129864400 // … · The following examples show several ways to create JavaScript dates:

There’s a special method Date.now() that returns the current timestamp. It is semantically equivalent to new Date().getTime(), but it doesn’t create an intermediate Date object. So it’s faster and doesn’t put pressure on garbage collection. It is used mostly for convenience or when performance matters, like in games in JavaScript or other specialized applications.

The JSClock function first creates a new Date object called time; since no arguments are given, time is created with the current date and time. Then calls to the getHours, getMinutes, and getSeconds methods assign the value of the current hour, minute, and second to hour, minute, and second.

August 7, 2023 - This method is a Date object method in JavaScript. It returns the day of the week (from 0 to 6) of the specified Date object. In this method, Sunday is considered the first day of the week (0), and Saturday is the last day (6).

date-fns provides the most comprehensive yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.

February 18, 2025 - The simplest and most effective method to get the current date into a JavaScript string is using the toLocalDateString() method from the Date object.

The Date object can be created ... a string representation of the current date and time: ... Date methods are functions that can be used on a Date object to perform various operations....

If at least two arguments are supplied, missing arguments are either set to 1 (if day is missing) or 0 for all others. The JavaScript date is based on a time value that is milliseconds since midnight 01 January, 1970 UTC.

September 1, 2008 - Most methods simply allow you to get and set the year, month, day, hour, minute, second, and millisecond fields of the object using either local time or UTC (universal, or GMT) time. The ECMAScript standard requires the Date object to be able to represent any date and time, to millisecond precision, within 100 million days before or after 1/1/1970. This is a range of plus or minus 273,785 years, so JavaScript can represent the date and time till the year 275755.

DOM Intro DOM Methods DOM Document ... Events JS Browser JS Quiz JS Certificate JS Summary ... Date methods let you get and set date values (years, months, days, hours, minutes, seconds, milliseconds)...

This instantiated object can be manipulated through the methods provided by the Date global object. Each instance holds its own unique date and time, separate from other instances, and can be modified independently. The new operator in JavaScript is used to create a new instance of an object.

February 25, 2025 - You can display a timer on the webpage with the help of JavaScript date object. Also, you can use different Date constructors to create the date object. This provides methods to get and set day, month, year, hour, minute and seconds.

June 17, 2025 - Master JavaScript Date objects—learn creation, parsing, time zones, and how to use getter and setter methods for date and time operations in web development.

February 4, 2026 - Date methods and time zones are covered in the next chapters. JavaScript will (by default) output dates using the toString() method. This is a string representation of the date, including the time zone.

This chapter contains a brief overview of the properties and method of the global Date object. The JavaScript Date object is a global object that is used to work with dates and times.