Creating Age Calculator in Javascript Javascript by Rajesh Kumar Sahanee - November 5, 2016April 6, 20200 Post Views: 8,988 Hello Friends, It’s being long time I’ve not shared anything with you but today I am going to share a code for Creating Age Calculator in Javascript. Age Calculator JavaScript <script> function calculateAge(dob){ var dob = new Date(dob); var diffInMillis = Date.now() - dob.getTime(); var age = new Date(diffInMillis); // miliseconds from epoch return Math.abs(age.getFullYear() - 1970); } </script> 12345678 <script> function calculateAge(dob){ var dob = new Date(dob); var diffInMillis = Date.now() - dob.getTime(); var age = new Date(diffInMillis); // miliseconds from epoch return Math.abs(age.getFullYear() - 1970); }</script> Output Demo Thanks Please share if you like