<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();
{
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)) {
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;
document.getElementById('lblError').innerHTML = 'Input date is incorrect!';
return false;
}
else {
document.getElementById('lblError').innerHTML = '';
document.getElementById('lblAge').innerHTML = years +' Years ' +months +' months '+days +' days';
document.getElementById('lblError').innerHTML = '';
document.getElementById('lblAge').innerHTML = years +' Years ' +months +' months '+days +' days';
}
}
else
{
document.getElementById('lblError').innerHTML = 'Date must be mm/dd/yyyy format';
return false;
}
}
}
</script>
</head>
<body>
<form id="form1" method="post">
<div>
Date of Birth :<input id="txtAge" onBlur="CalculateAge(this)" />(mm/dd/yyyy)
<span style="color: Red">
<Label ID="lblError" ></Label></span>
<br />
Age : <span id="lblAge"></span>
</div>
</form>
}
else
{
document.getElementById('lblError').innerHTML = 'Date must be mm/dd/yyyy format';
return false;
}
}
}
</script>
</head>
<body>
<form id="form1" method="post">
<div>
Date of Birth :<input id="txtAge" onBlur="CalculateAge(this)" />(mm/dd/yyyy)
<span style="color: Red">
<Label ID="lblError" ></Label></span>
<br />
Age : <span id="lblAge"></span>
</div>
</form>
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