Can somebody help me with HTML/Java Script source code for the Task below





Thank you all for helping me with this

It is site policy that we ask for a "best effort" attempt at solving the problem yourself first and then we can assist you. This means we do not provide code for you unless you show us what steps you have taken to do the work yourself. Show us what code you have written to actually try and solve the problem, we can then give you a push in the right direction.

so far I have only Credit Card validation

function onlydigits(str)
{
var re = new RegExp("([0-9]+)");
return (re.exec(str)!=null && RegExp.$1==str);
}

function checkccnumber(cardnum )
{

var cardnum = fld1.value;
if(cardnum.length > 0) cardnum = cardnum.replace(/ /gi,'');
if(cardnum.length > 0) cardnum = cardnum.replace(/-/gi,'');

if (cardnum.length<13 || cardnum.length>16)
{
alert("Credit card numbers must contain between 13 and 16 digits.");
return false;
}

if (!onlydigits(cardnum))
{
alert("Credit card numbers must contain only digits.");
return false;
}

var no_digit = cardnum.length;
var oddoeven = no_digit & 1;
var sum = 0;

for (var count = 0; count < no_digit; count++)
{
var digit = parseInt(cardnum.charAt(count),10);
if (!((count & 1) ^ oddoeven))
{
digit *= 2;
if (digit > 9)
digit -= 9;
}
sum += digit;
}
if (sum % 10 != 0)
{
alert("Credit card number is not valid. Please check that all digits were entered correctly.");
return false;
}

return true;
}

And what exactly are the problems you are having? Have you tried anything and it is not working? That is what I meant by showing us what you have "tried" but with no success.

This means you should have a question like "I am trying to do ______ but it is doing ______ and I don't understand why."