JavaScript Date Formats

There are generally 3 types of JavaScript date input formats:There are generally 3 types of JavaScript date input formats:

  • ISO Date
  • Date Short
  • Long Date
Learn more about JavaScript Dates

JavaScript Date Input

The ISO format uses a strict standard in JavaScript.

Other formats are not well defined and might be browser specific.

JavaScript Date Output

JavaScript will always show output dates in full text string format:

Wed Mar 28 2018 10:00:00 GMT+0100 (Central European Standard Time)

JavaScript ISO Dates

JS JavaScript - JavaScript ISO Dates

// The complete date
var d = new Date("2018-08-25");
// The date without specifying the day
var d = new Date("2018-08");
// The date without specifying the month and day
var d = new Date("2018");
// The date with hours, minutes and seconds
var d = new Date("2018-08-28T12:00:00Z")

UTC (Universal Time Coordinated) is the same as GMT (Greenwich Mean Time).

Omitting T or Z in a date-time string can give different result in different browser.

JavaScript Time Zones

JavaScript will use the browser's time zone 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.

E.g.: A browser/user from central US will get the date converted to CDT (Central US Daylight Time) even if the server has Date/Time created in GMT (Greenwich Mean Time).

JavaScript Short Dates

JS JavaScript - JavaScript Short Dates

// Short dates are written with an "MM/DD/YYYY" syntax
var d = new Date("08/25/2018");

JavaScript Long Dates

JS JavaScript - JavaScript Long Dates

// Long dates are most often written with a "MMM DD YYYY" syntax
var d = new Date("Aug 25 2018");
// Month and day can be in any order
var d = new Date("25 Aug 2018");
// Month can be written in full (August), or abbreviated (Aug)
var d = new Date("August 25 2018");
var d = new Date("Aug 25 2018");
// Commas are ignored and names are case insensitive
var d = new Date("AUGUST, 25, 2018");

Learn more about JavaScript Date Set Methods Learn more about JavaScript Date Get Methods

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JS JavaScript: Date Formats

There are generally 3 types of JavaScript date input formats:There are generally 3 types of JavaScript date input formats:

  • ISO Date
  • Date Short
  • ....

JS JavaScript: Numbers Methods

Number methods can help you when working with number datatypes. The number methods are improved in ES6 (ECMAScript 6).

Keep reading to understand how the number methods and properties may help you.

JS JavaScript: Date Get Methods

The Date object is used to work with Dates and Times. Date Get methods let you get date values

The methods will return the date relative to the local timezone. Every method starts with get, and will return the relative number. Below is a deta....

JS JavaScript: Const

Const is a keyword that indicates a constant. It describes an entity that cannot be changed at runtime. We cannot reassign a constant. With constants we lose the ability to modify variables at runtime and we gain run-time validation.

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JavaScript is one of the 3 core language technologies of the World Wide Web that all web developers must learn:

1.      HTML to define the content of web pages.

2.      CSS to specify the layout of web pages.

3.      JavaScript to program the behavior of web pages.

JavaScript is a scripting or programming language that allows you to implement complex things on web pages. Every time a web page does more than just sit there and display static information for you to look at, displaying timely content updates, interactive maps, animated 2D/3D graphics, scrolling video jukeboxes, etc. − you can bet that JavaScript is probably involved.

The benefits of using JavaScript are:

1.      You can validate user input before sending the page off to the server. This saves server traffic, which means less load on your server.

2.      Immediate feedback to the visitors − They don't have to wait for a page reload to see if they have forgotten to enter something.

3.      Increased interactivity − You can create interfaces that react when the user hovers over them with a mouse or activates them via the keyboard.

4.      Richer interfaces − You can use JavaScript to include such items as drag-and-drop components and sliders to give a Rich Interface to your site visitors.


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