Javascript Change Date Format
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Overview
Javascript is a widely use web technology that is being used to build website all over. It is supported by all the browsers and that makes it easily ready to use. The built in functions in Javascript without requiring the set up for plugins makes it Developer friendly.
Introduction
To format a date string to another desired format, we build an utility function that helps us to convert a date to a another format. There are some javascript libraries that allow us to convert and format and change date format in javascript date string. We will use the Date object that represents the date and time in the form of a timestamp and then we will use various method to format date string on several ways.
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Change Date Format Using Date() in JavaScript
Date() is a built in Javascript function that returns a formatted date string. The function new Date() when called returns the Date object and works like a constructor.
Syntax:
Let us consider a Javascript program to understand the use of Date()
Output:
Explanation: Here, the above Javascript function new Date() returns the Date object and we get the formatted string as day/ month(in string format) and year. Date() works like a constructor.
Change Date Format Using DateJS in JavaScript
DateJS is a library for Date provided by Javascript that is used to format, change date format in javascript,process and parse a string. To import Date.js include the .js file from the /build/ folder.
We use Date.parse to parse a string using DateJS in JAvascript.
Syntax:
Examples
Output:
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Change Date Format yyyy-mm-dd hh:mm
The function described below converts a string in yyyy-mm-dd format to hh:mm
Explanation:
The above JAvascript function stores the Date() in current date variable and converts it into a formatted date and returns the date in hh:mm
Convert dd/mm/yyyy to mm/dd/yyyy in JavaScript
The below mentioned javascript function converts dd/mm/yyy string format to mm/dd/yyyy format.
Explanation: The above function uses date.split("/") to format a dd/mm/yyyy to mm/dd/yyyy format.
Beautify Date yyyy-mm-dd hh:mm
Let us consider a Javascript function that converts a month number to month name format.
How to Change the Date Format in Vanilla JavaScript?
Let us understand how to change the Date Format using Vanilla Javascript.
Output:
Explanation: Here we use the dateFormat function consisting of two arguments- the input Date and the format to which the input Date is to be converted. The Date object is initialised when the source Date is passed as an argument to the constructor.
DateMethods like getMonth(), getDate() and getYear() are used to get the Date format components.
To format a month with a zero leading it's value, we use the method padStart .
Conclusion
In this article, we learnt.
- To format a srting using the Date() object in Javascript.
- To change a date format using Date.js where Date.ja is a built in Javascript library that allows formatting and parsing of date string.
- We learnt to beautify a given date string format and compiled a Javascript program using Vanilla Javascript to format a Date string. Now, Having learnt the various methods and functions to change date format in javascript, it is now your turn to playaround with codes and implement in while building websites using Javascript.
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