JavaScript ID number validation function support with X

 

//--identification number verification-support for new X ID card function isidcardno (num) { var Factorarr = new Array (7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2,1); Var error; var vararray = new Array (); Var intvalue; var lngproduct = 0; Var intcheckdigit; var intstrlen = num.length; var idNumber = num; //Initialize if (Intstrlen!= && (Intstrlen!=)) { //error = "Enter the ID number length is not correct!" "; //alert (Error); //frmadduser.txtidcard.focus (); return false; } //check and set value for (i=0;i<intstrlen;i++) { Vararray[i] = Idnumber.charat (i); if (Vararr Ay[i] < ' 0 ' | | Vararray[i] > ' 9 ') && (i!=) { //error = "Wrong ID number!."; //alert (Error); //frmadduser.txtidcard.focus (); return false; } else if (I <) { Vararray[i] = Vararray[i]*factorarr[i]; } } if (Intstrlen = =) { //check date var date8 = idnumber.substring (6,14); if (checkdate (Date8) = False) { //error = "Incorrect date information in ID card!."; //alert (Error); return false; } //Calculate the sum of the products for (i=0;i<17;i++) { Lngproduct = lngproduct + vararray[i]; //Calculate the check digit Intcheckdigit = 12-lngproduct% Switch (intcheckdigit) { Case 10: intcheckdigit = ' X '; break; Case One: intcheckdigit = 0; break; Case: Intcheckdigit = 1; break; } //Check last digit if (vararray[17].touppercase ()!= intcheckdigit) { //error = "id parity bit error!... Correct for: "+ Intcheckdigit +". //alert (Error); return false; } } else{//length is //check date var date6 = idnumber.substring (6,12); if (checkdate) = = False) { //alert ("ID date information is incorrect!."); return false; } //alert ("correct."); return true; }