Calculate Age using Javascript on text Change event

Question

0.00/5 (No votes)

See more:

Hai,
I have a Ajax datepicker extender with a Textbox to select Date of Birth in my aspx page. I want to calculate Age when some one enter or select a date in the above mentioned textbox and should display it in a label. I googled it. But I couldnt get a perfect one. I have done it in server side. But to avoid postback I want it to be done in the client side itself. My datetime format is "dd-MMM-yyyy"..
Please help me...
Thank you.

Posted 16-Aug-11 23:17pm

pufo

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

DaveAuld · Answer 1 · 2011-08-17T02:09:00

Solution 1

You need to create a simple date diff function; See examples here. http://ditio.net/2010/05/02/javascript-date-difference-calculation/[^]

Read the value from the control, get the current date, and do the calc..........

Posted 17-Aug-11 2:09am

DaveAuld

Comments

pufo 17-Aug-11 9:12am

Thank you for your reply.

codefloor · Answer 2 · 2015-01-10T06:26:00

Below javascript function will calculate age from 2 date values. Remember date values should be in DD/MM/YYYY format.

JavaScript

function CalculateAge(TodaysDate,NewDate) // Pass date in DD/MM/YYYY Format
{
   var day1 = parseInt(TodaysDate.substring(0,2),10);
   var mon1 = parseInt(TodaysDate.substring(3,5),10);
   var yr1 = parseInt(TodaysDate.substring(6,10),10);
   var day2 = parseInt(NewDate.substring(0,2),10);
   var mon2 = parseInt(NewDate.substring(3,5),10);
   var yr2 = parseInt(NewDate.substring(6,10),10);
   var diff1 = parseInt(yr1 - yr2);
   var diff2 = parseInt(mon1 - mon2);
   var diff3 = parseInt(day1 - day2);
   if(diff2 <0)
   {
   diff1 = diff1-1;
   diff2 = diff2+12;
   }
   if(diff3 <0)
   {
   diff2 = diff2-1;
   if(diff2<0)
   {
   diff1 = diff1-1;
   diff2 = diff2+12;
   }
   }
   var strAge = diff1+"."+diff2;
   return parseFloat(strAge);
}

For more details please refer this link.