Check Digit Routine

[ctaylorcolortech]

Has anyone had experience with writing a check digit routine? I need to write a modulus 10 check digit routine and I am fairly inexperienced with Javascript and could any help you may have. Thanks in advance.

[ctaylorcolortech]

I was able to figure it after all. If anyone needs this for the future, I have included the code.

 

digit1 = StringToNumber(Left(Field("ID ENTITY FEIN1"), 1));

digit2 = StringToNumber(Right(Field("ID ENTITY FEIN1"), 1));

digit3 = StringToNumber(Left(Field("ID ENTITY FEIN2"), 1));

digit4 = StringToNumber(Mid(Field("ID ENTITY FEIN2"), 2, 1));

digit5 = StringToNumber(Mid(Field("ID ENTITY FEIN2"), 3, 1));

digit6 = StringToNumber(Mid(Field("ID ENTITY FEIN2"), 4, 1));

digit7 = StringToNumber(Mid(Field("ID ENTITY FEIN2"), 5, 1));

digit8 = StringToNumber(Mid(Field("ID ENTITY FEIN2"), 6, 1));

digit9 = StringToNumber(Right(Field("ID ENTITY FEIN2"), 1));

result1 = digit1 * 1;

result2 = digit2 * 2;

result3 = digit3 * 1;

result4 = digit4 * 2;

result5 = digit5 * 1;

result6 = digit6 * 2;

result7 = digit7 * 1;

result8 = digit8 * 2;

result9 = digit9 * 1;

result1a = FormatNumber("00", result1);

result2a = FormatNumber("00", result2);

result3a = FormatNumber("00", result3);

result4a = FormatNumber("00", result4);

result5a = FormatNumber("00", result5);

result6a = FormatNumber("00", result6);

result7a = FormatNumber("00", result7);

result8a = FormatNumber("00", result8);

result9a = FormatNumber("00", result9);

add1 = StringToNumber(Left(result1a, 1));

add2 = StringToNumber(Right(result1a, 1));

add3 = StringToNumber(Left(result2a, 1));

add4 = StringToNumber(Right(result2a, 1));

add5 = StringToNumber(Left(result3a, 1));

add6 = StringToNumber(Right(result3a, 1));

add7 = StringToNumber(Left(result4a, 1));

add8 = StringToNumber(Right(result4a, 1));

add9 = StringToNumber(Left(result5a, 1));

add10 = StringToNumber(Right(result5a, 1));

add11 = StringToNumber(Left(result6a, 1));

add12 = StringToNumber(Right(result6a, 1));

add13 = StringToNumber(Left(result7a, 1));

add14 = StringToNumber(Right(result7a, 1));

add15 = StringToNumber(Left(result8a, 1));

add16 = StringToNumber(Right(result8a, 1));

add17 = StringToNumber(Left(result9a, 1));

add18 = StringToNumber(Right(result9a, 1));

digittotal = add1 + add2 + add3 + add4 + add5 + add6 + add7 + add8 + add9 + add10 + add11 + add12 + add13 + add14 + add15 + add16 + add17 + add18;

checkdigit = digittotal % 10

if (checkdigit == 0)

return "0";

else

return 10 - checkdigit;