Javascript Experts Come In Please

[Scroller]

I'm hoping to "translate" this function writtein in ASP into Javascript. Not much luck so far (Javascipt is virtually impossible to debug), can anyone give me a hint?


Private function chkNRIC(NRIC)
'checks for a vaild nric, returns 1 for invalid nric, returns 0 for valid nric
chkNRIC = 0

'weightage 2,7,6,5,4,3,2
Dim W_Array(8)
W_Array(1) = 2
W_Array(2) = 7
W_Array(3) = 6
W_Array(4) = 5
W_Array(5) = 4
W_Array(6) = 3
W_Array(7) = 2

'last character
'A B C D E F G H I Z J
Dim char_Array(11)
char_Array(1) = "A"
char_Array(2) = "B"
char_Array(3) = "C"
char_Array(4) = "D"
char_Array(5) = "E"
char_Array(6) = "F"
char_Array(7) = "G"
char_Array(8) = "H"
char_Array(9) = "I"
char_Array(10) = "Z"
char_Array(11) = "J"

'check length (9 is correct)
If Len(NRIC) <> 9 then
chkNRIC = 1

'check last character

else
DIM i, sum_n, key_digit, lastAlpha
sum_n = 0

For i = 2 to 8
if IsNumeric(mid(nric,i,1)) then
sum_n = sum_n + (CInt(mid(nric,i,1))) * (CInt(W_Array(i-1)))
end if
Next

key_digit = 11 - (sum_n mod 11)
lastAlpha = char_Array(key_digit)

if lastAlpha <> Right(NRIC,1) then
chkNRIC = 1
end if

End if

end function

[sequill]

I put up a JavaScript version / demo at:
http://www.sequill.net/chkNRIC.html

I didn't have a valid nric value to check and I wasn't going to work one out...if it works,great... if it doesn't, give me some valid values so I can test it.

[Scroller]

hi sequil

thanks a million for the help

I tested, something seems to be wrong still cos valid ones can't get pass ...

these are a couple of valid ones that I have ...
8433044B
7620977D
8113766H
8329110I

any idea?

[sequill]

Hi Scroller,
I had another look/see, and it's working now.

Pardon my ignorance, but what is NRIC? I even looked it up and couldn't find much about it, except some organization that use those initials, and one discussion on DevShed about it, but with few details about what it was.

[sequill]

I've no idea..I'm just a pawn in this chess game.

[vonbrocklin]

You got me curious so I searched too - it is a Singapore Identity Card Number...

[Scroller]

hi sequill,

thank you very much. it's working beautifully it all appears so clear now (esp. after spending hours going in circles).

anyway, yap! that's the identification number over here in Singapore. We very much ran out of numbers so the government actually started a new algorithm for newborns in the last 1-2 years. still trying to figure that out. arrgghhh ...