How to calucate months and Days

Question

2.67/5 (2 votes)

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Dipslaying only year ... I need months and Days

C#

<script type="text/javascript">

    function CalculateAge(birthday) {

        var re = /^(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d+$/;

        if (birthday.value != '') {

            if (re.test(birthday.value)) {
                birthdayDate = new Date(birthday.value);
                dateNow = new Date();

                var years = dateNow.getFullYear() - birthdayDate.getFullYear();
                var months = dateNow.getMonth() - birthdayDate.getMonth();
                var days = dateNow.getDate() - birthdayDate.getDate();
                if (isNaN(years)) {

                    document.getElementById('lblAge').innerHTML = '';
                    document.getElementById('lblError').innerHTML = 'Input date is incorrect!';
                    return false;

                }

                else {
                    document.getElementById('lblError').innerHTML = '';

                    if (months < 0 || (months == 0 && days < 0)) {
                        years = parseInt(years) - 1;
                        document.getElementById('lblAge').innerHTML = years + ' Years '
                    }
                    else {
                        document.getElementById('lblAge').innerHTML = years + ' Years '
                    }
                }
            }
            else {
                document.getElementById('lblError').innerHTML = 'Date must be mm/dd/yyyy format';
                return false;
            }
        }
    }
</script>

XML

<div>
            Date of Birth :<asp:TextBox ID="txtAge" runat="server" onblur="CalculateAge(this)" />(mm/dd/yyyy)
            <span style="color: Red">
                <asp:Label ID="lblError" runat="server"></asp:Label></span>
            <br />
            Age&nbsp;&nbsp;&nbsp; : <span id="lblAge"></span>

Posted 6-Aug-14 18:36pm

Sai Prasad anumolu

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**DiponRoy** · Answer 1 · 2014-08-06T19:21:00

for date time issues monent.js is the true friend.
here is the jsfiddle[^]

JavaScript

var startDateString = "1/7/2014";
var endDateString = "1/8/2014";

/*string to date object*/
var startDate = moment(startDateString, "DD/M/YYYY");
var endDate = moment(endDateString, "DD/M/YYYY");

/*date difference*/
var diffInDays = endDate.diff(startDate, 'days');
alert(diffInDays);

var diffInMonths = endDate.diff(startDate, 'months'); //att parm true for more better sesult
alert(diffInMonths);


var diffInYears = endDate.diff(startDate, 'years'); //att parm true for more batter sesult
alert(diffInYears);

for more http://momentjs.com/docs/#/displaying/difference/[^]