Bill: jquery check China ID number

Mainland 18 ID Card (second-generation ID card)

Identity number is a set of feature combination code, consisting of 17-bit digital body code and a check code.

The sorting order is from left to right: six-digit area code, eight-digit birthday code, three-digit sequence code, and one digit check code.

Check method:

(1) The first 17 digits of the right sum

S = Sum (Ci * Vi), i = 0, ..., 16

Ci: Numeric value indicating position I on ID number

Vi: denotes "weighted factor" at position I
Weighting Factor Vi:7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2

(2) Computational modulus (fixed algorithm)

Y = mod (S, 11)

(3) The calculation module y and the corresponding check code check
Y:0 1 2 3 4 5 6 7 8 9 10 (through Y to obtain the corresponding check code and identity card 18th digit check)
Check code: 1 0 X 9 8 7 6 5 4 3 2

functioncheck_id (value) {varArrexp = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];//weighting Factor    varArrvalid = [1, 0, "X", 9, 8, 7, 6, 5, 4, 3, 2];//Check Code    if(/^\d{17}\d|x$/i.test (value)) {           varsum = 0, IDX;  for(vari = 0; i < value.length-1; i++){              //sum the first 17 digits with the weight value productSum + = parseint (Value.substr (i, 1), 10) *Arrexp[i]; }          //computational modulus (fixed algorithm)IDX = sum% 11; //Check whether the 18th is equal to the check code        returnARRVALID[IDX] = = Value.substr (17, 1). toUpperCase (); }Else{          return false; }  }

Bill: jquery check China ID number