Get age from Birthdate [duplicate]

by

Try this function…

function calculate_age(birth_month,birth_day,birth_year)
{
    today_date = new Date();
    today_year = today_date.getFullYear();
    today_month = today_date.getMonth();
    today_day = today_date.getDate();
    age = today_year - birth_year;

    if ( today_month < (birth_month - 1))
    {
        age--;
    }
    if (((birth_month - 1) == today_month) && (today_day < birth_day))
    {
        age--;
    }
    return age;
}

OR

function getAge(dateString) 
{
    var today = new Date();
    var birthDate = new Date(dateString);
    var age = today.getFullYear() - birthDate.getFullYear();
    var m = today.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) 
    {
        age--;
    }
    return age;
}

[See Demo.][1]
[1]: http://jsfiddle.net/mkginfo/LXEHp/7/

More Related Contents:

  1. How to add number of days to today’s date? [duplicate]
  2. jQuery UI DatePicker to show month year only
  3. how to parse a “dd/mm/yyyy” or “dd-mm-yyyy” or “dd-mmm-yyyy” formatted date string using JavaScript or jQuery [duplicate]
  4. Get first and last date of current month with JavaScript or jQuery [duplicate]
  5. How do I pre-populate a jQuery Datepicker textbox with today’s date?
  6. How to add/subtract dates with JavaScript?
  7. Get week of the month
  8. Convert normal date to unix timestamp
  9. How to get the hours difference between two date objects? [duplicate]
  10. Set date in input type date
  11. How to split a string at the first `/` (slash) and surround part of it in a “?
  12. Get current date in DD-Mon-YYY format in JavaScript/Jquery
  13. JavaScript Detecting Valid Dates
  14. Find all the days in a month with Date object?
  15. Check if date is in the past Javascript
  16. javascript date + 7 days
  17. How to check if a string is a legal “dd/mm/yyyy” date?
  18. Convert iso timestamp to date format with Javascript?
  19. moment.js isValid function not working properly
  20. How can I create an Asynchronous function in Javascript?
  21. HTML5 Canvas toDataURL returns blank
  22. How to reload/refresh jQuery dataTable?
  23. Loading scripts after page load?
  24. jQuery click function only works on first element
  25. JavaScript moving element in the DOM
  26. How to change tabs programmatically in jquery-ui 1.9?
  27. jQuery addClass onClick
  28. Is My Page Being Loaded from the Browser Cache?
  29. In jQuery, is there any way to only bind a click once?
  30. Renaming object keys recursively

Leave a Comment