Regex to validate date of birth
Solution
In Jquery
var checkDOB = function () {
debugger;
var regexp = new RegExp( '^(0[1-9]|1[012])[/](0[1-9]|[12][0-9]|3[01])[/](19|20)\\d\\d$');
var check = $("#AddDateOfBirth").val();
if (!regexp.test(check)) {
alert('Invalid Format. Please Enter: dd/mm/yyyy');
$('#AddDateOfBirth').css('border-color', 'red');
return false;
}
else {
$('#AddDateOfBirth').css('border-color', 'green');
return true;
}
}
In HTML
@Html.TextBox("AddDateOfBirth", null, new { @class = "form-control text-box", @placeholder = "dd/mm/yyyy", @onchange = "checkDOB()" })
EXPLANATION
This regex will validate date of birth by allowing you to enter the date of birth in this format dd/mm/yyyy only. Invalid input (not in the format dd/mm/yyyy) will return false and make the borders of text-box red.
Bug Fixes & Coding Solutions 
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