Birth Date Validation in JavaScript

This code snippet is a birth date validation in JavaScript.

Html Code for datepicer

<div class="form-group" style="margin-left:250px">
    <label class="col-sm-2 control-label">Birth Date:</label>
    <div class="col-sm-3">
        <p class="input-group">
            <input type="text" name="bday" id="bday" class="form-control" ng-focus="open($event)" ng-blur="out()" datepicker-popup="{{format}}" ng-model="newuser.bdate" is-open="opened" readonly="readonly" />
            <span class="input-group-btn">
                <button type="button" class="btn btn-default" ng-click="open($event)">
                    <i class="glyphicon glyphicon-calendar"></i>
                </button>
            </span>
        </p>
    </div>
</div>

You are select an 18/05/2015

 

Than alert message display an error

 

 

If you entered up to 18 years then out put look like this

 

 

JavaScript Code for Date control

//On focus out
$scope.out = function()
{
    var x = new Date($("#bday").val());
    var Cnow = new Date();
    if ($("#bday").val() == "")
    {
        $("#bday").focus();
    }
    else if (Cnow.getFullYear() - x.getFullYear() < 18)
    {
        alert('You Are Not 18 Year');
        $("#bday").val('');
    }
    else {}
};

This code work focus out time if valid the no error found otherwise display error you are not 18 year old.

 

Thank You