Cut & Paste Ultimate Age Calculator

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Cut & Paste Ultimate Age Calculator

Credit: JavaScript Kit

Description: This is your ultimate age calculator script! Use it to display the age of any person or past event, in a variety of units. Highlights of the script are:

Display the age in any one of the following units-"years", "months", or "days"
Specify the number of decimals to show
Specify whether to round up or down the age
Script can be invoked multiple times on the same page to calculate/display multiple ages.

Example:

JavaScriptKit.com is old!
has passed since the Millennium.
Bill Gates is old.

Directions

Step 1: Insert the following script in the <HEAD> section of your page:

/* Ultimate Age calculator script- By JavaScript Kit (http://javascriptkit.com) Over 200+ free scripts here! Credit must stay intact for use */ var one_day=1000*60*60*24 var one_month=1000*60*60*24*30 var one_year=1000*60*60*24*30*12 function displayage(yr, mon, day, unit, decimal, round){ today=new Date() var pastdate=new Date(yr, mon-1, day) var countunit=unit var decimals=decimal var rounding=round finalunit=(countunit=="days")? one_day : (countunit=="months")? one_month : one_year decimals=(decimals<=0)? 1 : decimals*10 if (unit!="years"){ if (rounding=="rounddown") document.write(Math.floor((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals+" "+countunit) else document.write(Math.ceil((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals+" "+countunit) } else{ yearspast=today.getFullYear()-yr-1 tail=(today.getMonth()>mon-1 || today.getMonth()==mon-1 && today.getDate()>=day)? 1 : 0 pastdate.setFullYear(today.getFullYear()) pastdate2=new Date(today.getFullYear()-1, mon-1, day) tail=(tail==1)? tail+Math.floor((today.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals : Math.floor((today.getTime()-pastdate2.getTime())/(finalunit)*decimals)/decimals document.write(yearspast+tail+" "+countunit) } } //Sample usage //displayage (year, month, day, unit, decimals, rounding) //Unit can be "years", "months", or "days" //Decimals specifies demical places to round to (ie: 2) //Rounding can be "roundup" or "rounddown" //displayage(1997, 11, 24, "years", 0, "rounddown")

Step 2: With the above script installed, you can now calculate and display the age of any item by invoking the function displayage(). Insert the following sample code in the <BODY> section of your page to see how to use this function:

Here's the lowdown on displayage():

//displayage (year, month, day, unit, decimals, rounding)
//year should be a valid full year (ie: 1978)
//month should an integer from 1 to 12
//day should be a valid day of the month
//unit specifies the unit to display the age in. Valid values are "years", "months", or "days"
//decimals specifies the number of trailing decimals. Valid values are 0 and above
//rounding specifies whether to round up or down the age. Valid values are "roundup" or "rounddown"

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