date of birth validation

lolodede

i like to validate date of birth as format dd/mm/yyy i tried everything but is not working
thank you

lolodede

whats wrong with my code

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 <!--

function Validate(){

var DOB = new Date(document.forms.DOB.value)

if (DOB == "NaN") {

    alert("DOB required in the format DD/MM/YYYY")

    document.forms.DOB.select.focus()

    return false

}

}

//-->

Date of Birth (dd/mm/yyy): <input type="text" name="DOB" size="30" onblur="Validate()" /></p>

dmjpro

Show us your code what you tried so far?

Dormilich

you test whether the Date object is a string, I doubt it will fire. possibly isNAN() or typeof DOB will get you further

lolodede

i used the above code but it didnt work i dont why
i also i want to validate the the radio buttons so i know if user answered both of the questions

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 function checkForm() {

//This fuction shows that the user need to answer Question one
 
var el = document.forms[0].elements;

for(var i = 0 ; i < el.length ; ++i) {

if(el[i].name == "visites") {

var radiogroup = el[el[i].name];

var itemchecked = false;

for(var j = 0 ; j < radiogroup.length ; ++j) {

if(radiogroup[j].checked) {

itemchecked = true;

break;

}

}

if(!itemchecked) {

alert("Please Answer Question One");

if(el[i].focus)

el[i].focus();

return false;

}

}

}

return true;

}

i used this twice but i dont know how

dmjpro

@lolodede
Actually "document.forms" returns Form Collection then how does it work "document.forms.DOB"?

I think when a String is compared with an Object then Object must be converted into String.

gits

to your first question: you could use a simple regExp to check the form's value for the correct format:

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var s  = '01/01/2009';

var re = /\d{2}\/\d{2}\/\d{4}/;
 
alert(re.test(s))

kind regards

acoder

Don't forget the start and end characters:

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var re = /^\d{2}\/\d{2}\/\d{4}$/;

gits

:) ... yep ... thanks for pointing that out ...

kind regards

lolodede

i used reg expression but is not working right i try to alert it but icant do that i dont know why
thanks for help

gits

show the code that you have tried.

kind regards

dmjpro

Hello all ...What would be my answer ? ;)

lolodede

thanks for help its working now

date of birth validation

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