filmov
tv
Javascript Calculate Age from Date of Birth - Step by Step Code Explanation
Показать описание
Calculate Age From Date of Birth DOB in Vanilla JavaScript
Javascript Calculate Age, Calculate Age Javascript
Vanilla Javascript Solution to Calculate Age in Years Months Days from Date of Birth [DOB]
Related Tags: calculate age from date of birth javascript, get age from date of birth javascript, javascript age, javascript calculate age from date, calculate age based on date of birth using javascript, javascript calculate age, Calculate Age JS
Javascript Calculate Age – Introduction
In this article, We will learn how to Calculate a persons age using their Date of Birth as an input in Javascript. Vanilla Javascript solution to return a persons age using their DOB
Pre-requisites: Basic HTML and Javascript Knowledge
Video Tutorial – Javascript Calculate Age from Date of Birth
Now, you have see the video tutorial, lets, move on to the code explanation and we will cover the following -.
How to Calculate Age Javascript in Years, Months, Days, Hours, Minutes, Seconds and Milliseconds using persons DOB
Before we move on to Javascript code, lets create a HTML div to help us print results on the screen, you can replace this with your GUI.
HTML Code and Explanation
In the HTML File.
I create a div with an id called placeholder.
Later this id will be used in JavaScript to identify this div element and print results on the screen.
Try the code for yourself here: CodePen
Calculate Age JavaScript Code and Explanation
In the JS File
First I define a variable called DOB to store a persons Date of Birth.
Definition and Usage
The parse() method parses a date string and returns the number of milliseconds between the date string and midnight of January 1, 1970
Using these functions as base.
I create 2 new variables millisecondsBetweenDOBAnd1970 and millisecondsBetweenNowAnd1970 to store number of milliseconds between DOB/NOW and January 1, 1970 respectively.
Then to get the age of a person in Milliseconds subtract DOB from NOW.
Now, when I have a persons age in Milliseconds, we just need to write basic logic to convert it into Years, Months, Days, Hours, Minutes, Seconds
As we know this as facts:
1 year = 365 day (except leap year), 1 Month = 30 days (approx.), 1 Day = 24 Hours, 1 Hour = 60 Minutes, 1 Minute = 60 Seconds, 1 Second = 1000 Milliseconds
Disclaimer: Leap Year hasn’t been taken into consideration in this example. The days in a month has also been generalised to 30 days in a months (whereas depending on a year a month can have 31, 30, 29 or 28 days in it)
Please do not use this article for your college projects unless the above disclaimer is not a concern and don’t forget to reference this page.
Lets, get back into explanation, then I convert these facts into code.
Output / Result
In the results you can see all the conversions, improve or try the code for yourself on CodePen.
Please don’t forget to leave a comment or questions, you can easily signup/login to the website using Email, Facebook, Twitter or Google Account.
Javascript Calculate Age, Calculate Age Javascript
Vanilla Javascript Solution to Calculate Age in Years Months Days from Date of Birth [DOB]
Related Tags: calculate age from date of birth javascript, get age from date of birth javascript, javascript age, javascript calculate age from date, calculate age based on date of birth using javascript, javascript calculate age, Calculate Age JS
Javascript Calculate Age – Introduction
In this article, We will learn how to Calculate a persons age using their Date of Birth as an input in Javascript. Vanilla Javascript solution to return a persons age using their DOB
Pre-requisites: Basic HTML and Javascript Knowledge
Video Tutorial – Javascript Calculate Age from Date of Birth
Now, you have see the video tutorial, lets, move on to the code explanation and we will cover the following -.
How to Calculate Age Javascript in Years, Months, Days, Hours, Minutes, Seconds and Milliseconds using persons DOB
Before we move on to Javascript code, lets create a HTML div to help us print results on the screen, you can replace this with your GUI.
HTML Code and Explanation
In the HTML File.
I create a div with an id called placeholder.
Later this id will be used in JavaScript to identify this div element and print results on the screen.
Try the code for yourself here: CodePen
Calculate Age JavaScript Code and Explanation
In the JS File
First I define a variable called DOB to store a persons Date of Birth.
Definition and Usage
The parse() method parses a date string and returns the number of milliseconds between the date string and midnight of January 1, 1970
Using these functions as base.
I create 2 new variables millisecondsBetweenDOBAnd1970 and millisecondsBetweenNowAnd1970 to store number of milliseconds between DOB/NOW and January 1, 1970 respectively.
Then to get the age of a person in Milliseconds subtract DOB from NOW.
Now, when I have a persons age in Milliseconds, we just need to write basic logic to convert it into Years, Months, Days, Hours, Minutes, Seconds
As we know this as facts:
1 year = 365 day (except leap year), 1 Month = 30 days (approx.), 1 Day = 24 Hours, 1 Hour = 60 Minutes, 1 Minute = 60 Seconds, 1 Second = 1000 Milliseconds
Disclaimer: Leap Year hasn’t been taken into consideration in this example. The days in a month has also been generalised to 30 days in a months (whereas depending on a year a month can have 31, 30, 29 or 28 days in it)
Please do not use this article for your college projects unless the above disclaimer is not a concern and don’t forget to reference this page.
Lets, get back into explanation, then I convert these facts into code.
Output / Result
In the results you can see all the conversions, improve or try the code for yourself on CodePen.
Please don’t forget to leave a comment or questions, you can easily signup/login to the website using Email, Facebook, Twitter or Google Account.
0:14:40
Javascript Age Calculator | Calculate Age from Date of Birth
0:09:41
Javascript Calculate Age from Date of Birth - Step by Step Code Explanation
0:00:18
Calculate Age from Date Of Birth in javascript | JavaScript Tutorial #javascript #reactjs
0:23:26
How To Build Age Calculator App Using HTML CSS And JavaScript
0:14:52
Javascript Age Calculator | Calculate Age from Date of Birth | HTML CSS and Javascript
0:16:35
JavaScript Age Calculator | How to Calculate age in JavaScript | JavaScript Age Calculator
0:00:09
JS - calculate your age in JS #shorts #js
0:15:50
HTML CSS JavaScript Project | How to Calculate Age From Date of Birth Using Java
0:00:16
How to calculate age from birthdate #javascript #shorts
0:01:34
Javascript age calculator calculate age from date of birth
0:24:51
JavaScript Age Calculator | How to Calculate age in JavaScript | JavaScript Age Calculator
0:05:05
javascript calculate age from date of birth
0:11:14
How To Create a Age Calculator in HTML CSS & JavaScript [Calculate Age from Date of Birth]
0:03:24
Watch later Add to queue JavaScript Age Calculator | Calculate Age from Date of Birth
0:00:57
calculate age from date of birth using #javascript #jquery #html #webdevelopment
0:05:07
javascript calculate age in years months days
0:02:21
JavaScript Date Difference in Days - HowToCodeSchool.com
0:06:21
Calculate Date Differences with HTML CSS and JavaScript
0:00:58
#shorts #Programming converting function calculate age in days in javascript
0:07:56
Calculate AGE based on Date of birth using jQuery Datepicker
0:01:24
JavaScript : Calculate age given the birth date in the format YYYYMMDD
0:25:11
How To Create Age Calculator App Using HTML, CSS and JavaScipt | Calculate Age from Date of Birth
0:00:59
#shorts #Programming converting function calculate age in days in javascript
0:05:10
javascript to calculate age from date of birth
Комментарии