JavascriptforvalidateIDnumber (18digitor15digit)

* ** ID card 15-digit encoding rule: ddddddddyymmddxxp * dddddd: Location Code * yymmdd: Date of birth * xx: sequence class code, uncertain * p: Gender, odd number: male, the even number is female * & lt; p & gt; * ID card 18-bit encoding rule: ddddd/*** ID card 15-bit encoding rule: dddddddddd yymmdd xx p * dddddddd: location Code * yymmdd: Date of birth * xx: sequence class code, uncertain * p: Gender, odd number of male, even number of female *

* ID card 18-bit encoding rule: dddddddd yyyymmdd xxx y * dddddddd: Location Code * yyyymmdd: Date of birth * xxx: sequence class code, uncertain, odd number is male, even number: Female * y: Check Code. This digit can be obtained through the first 17 digits *

* The 18-digit number weighting factor is (from right to left) Wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1] * Verification digit Y = [1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2] * formula for calculating the checkpoint: Y_P = mod (Σ (Ai × Wi), 11) * I is the number of the ID card number from right to left 2... 18 bits; Y_P is the position of the checkcode array where the ankle checkcode is located **/function len (s) {var l = 0; var a = s. split (""); for (var I = 0; I if (a [I]. charCodeAt (0) <299) {l ++;} else {l + = 2 ;}} return l ;}var Wi = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1]; // weighting factor var ValideCode = [1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2]; // ID card verification bit value. 10 represents X function IdCardValidate (idCard) {idCard = trim (idCard. replace (// g, ""); if (idCard. length = 15) {return isValidityBrithBy15IdCard (idCard);} else if (idCard. length = 18) {var a_idCard = idCard. split (""); // obtain the ID card array if (isValidityBrithBy18IdCard (idCard) & isTrueValidateCodeBy18IdCard (a_idCard) {return tru E;} else {return false ;}} /*** check whether the last verification digit is correct when the ID card number is 18 * @ param a_idCard ID card number array * @ return */function isTrueValidateCodeBy18IdCard (a_idCard) {var sum = 0; // declare the weighted sum variable if (a_idCard [17]. toLowerCase () = 'X') {a_idCard [17] = 10; // Replace the verification code with the last digit of x with 10 for subsequent operations} for (var I = 0; I <17; I ++) {sum + = Wi [I] * a_idCard [I]; // weighted sum} valCodePosition = sum % 11; // obtain the verification code location if (a_idC Ard [17] = ValideCode [valCodePosition]) {return true;} else {return false ;}} /*** determine whether the ID card is a male or female * @ param idCard 15/18-bit ID card number * @ return 'female '-female or 'male'-male */function maleOrFemalByIdCard (idCard) {idCard = trim (idCard. replace (// g, ""); // process the ID card number. Contains spaces between characters. If (idCard. length = 15) {if (idCard. substring () % 2 = 0) {return 'female ';} else {return 'male';} else if (idCard. length = 18) {if (idCard. substring () % 2 = 0) {return 'female ';} else {return 'male' ;}} else {return null ;} // The input characters can be processed as arrays. // if (idCard. length = 15) {// alert (idCard [13]); // if (idCard [13] % 2 = 0) {// return 'female '; //} else {// return 'male'; //} else if (idCard. length = 18 ){ // Alert (idCard [16]); // if (idCard [16] % 2 = 0) {// return 'female '; //} else {// return 'male'; //} else {// return null; ///}/*** verify whether the birthday in the 18-digit ID card number is a valid birthday * @ param idCard 18-digit book id card string * @ return */function isValidityBrithBy18IdCard (idCard18) {var year = idCard18.substring (6, 10); var month = idCard18.substring (10, 12); var day = idCard18.substring (12, 14); var temp_date = new Date (year, parseFloa T (month)-1, parseFloat (day); // here getFullYear () is used to get the year to avoid the problem of Millennium insects if (temp_date.getFullYear ()! = ParseFloat (year) | temp_date.getMonth ()! = ParseFloat (month)-1 | temp_date.getDate ()! = ParseFloat (day) {return false;} else {return true ;}} /*** verify whether the birthday in the 15-digit ID card number is a valid birthday * @ param idCard15 15-digit book id card string * @ return */function isValidityBrithBy15IdCard (idCard15) {var year = idCard15.substring (6, 8); var month = idCard15.substring (8, 10); var day = idCard15.substring (10, 12); var temp_date = new Date (year, parseFloat (month)-1, parseFloat (day); // if you are older than your ID card, you do not need to consider the millennium bug and use the getYear () method if (temp_d Ate. getYear ()! = ParseFloat (year) | temp_date.getMonth ()! = ParseFloat (month)-1 | temp_date.getDate ()! = ParseFloat (day) {return false;} else {return true ;}// remove the leading and trailing spaces of the string and function trim (str) {return str. replace (/(^ \ s *) | (\ s * $)/g ,"");}