Generator numerów dowodu osobistego http://www.bogus.ovh.org/generatory/numer-dowodu-osobistego.html

polish_id.js

function validateID (id) {
  
  //"If ID Document Type is 'Identity Card' then Document Number should be in format XXXDDDDDD (three letters and six digits). To verify the correctness letters
    //should be changed to numbers using follwing table (A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z
    //10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35). Each from received 9 numbers should be multiplied by corresponding
    //number from the following list (7, 3, 1, 9, 7, 3, 1, 7, 3). After adding results division by 10 should be equal to 0."
    
    if (id.length === 0) {
      return false;
    }
  
    var i = 0;
    var type =  'Identity Card';
    var result =  /^[A-Z]{3}\d{6}/.test(id);
    if (!result) {
      return false;
    }
    
    var w = [7, 3, 1, 9, 7, 3, 1, 7, 3];
    var numid =[];
        
    for(i=0;i<3;i++) {
      var temp = id.charCodeAt(i)-55; 
      numid.push(temp);
    }
    
    for ( i = 3; i<id.length;i++)
        numid.push(parseInt(id.charAt(i)));
   
    var sum = 0;
    for ( i = 0; i<numid.length;i++)
        sum += numid[i]*w[i];
 
    var m = sum % 10;
    
    if (m === 0) {
      console.log("Valid!");
      return true;
    } else {
      return false;
    }
}