您好我需要使用javascript进行 IBAN验证检查。
我需要遵循的规则是
验证IBAN 通过将IBAN转换为整数并对其执行基本mod-97操作（如ISO 7064中所述）来验证IBAN。如果IBAN有效，则余数等于 1。
1 。根据国家/地区检查总IBAN长度是否正确。如果不是，则IBAN无效
2 。将四个初始字符移动到字符串的末尾
3 。用两位数字替换字符串中的每个字母，从而扩展字符串，其中A = 10，B = 11，...，Z = 35
4 。将字符串解释为十进制整数，并在除以97时计算该数字的余数
我这是为白俄罗斯IBAN做的，所以它必须遵循以下格式
2C 31N -
RU1230000000000000000000000000000
如何修改以下内容以符合上述规则;
function validateIBAN(iban) {
var newIban = iban.toUpperCase(),
modulo = function (divident, divisor) {
var cDivident = '';
var cRest = '';
for (var i in divident ) {
var cChar = divident[i];
var cOperator = cRest + '' + cDivident + '' + cChar;
if ( cOperator < parseInt(divisor) ) {
cDivident += '' + cChar;
} else {
cRest = cOperator % divisor;
if ( cRest == 0 ) {
cRest = '';
}
cDivident = '';
}
}
cRest += '' + cDivident;
if (cRest == '') {
cRest = 0;
}
return cRest;
};
if (newIban.search(/^[A-Z]{2}/gi) < 0) {
return false;
}
newIban = newIban.substring(4) + newIban.substring(0, 4);
newIban = newIban.replace(/[A-Z]/g, function (match) {
return match.charCodeAt(0) - 55;
});
return parseInt(modulo(newIban, 97), 10) === 1;
}
答案 0 :(得分：27)
您可以使用此库来验证和格式化IBAN：https://github.com/arhs/iban.js（免责声明：我编写了库）
然而，俄罗斯和白俄罗斯都不受支持，因为我在IBAN page of wikipedia和official IBAN registry都找不到这些国家，所以我担心你不得不修改库代码自己添加它。
答案 1 :(得分：24)
根据http://toms-cafe.de/iban/iban.js的工作，我开发了我的IBAN检查版本。
您可以修改变量 CODE_LENGTHS
来修改国家/地区支持这是我的实施：
function alertValidIBAN(iban) {
alert(isValidIBANNumber(iban));
}
/*
* Returns 1 if the IBAN is valid
* Returns FALSE if the IBAN's length is not as should be (for CY the IBAN Should be 28 chars long starting with CY )
* Returns any other number (checksum) when the IBAN is invalid (check digits do not match)
*/
function isValidIBANNumber(input) {
var CODE_LENGTHS = {
AD: 24, AE: 23, AT: 20, AZ: 28, BA: 20, BE: 16, BG: 22, BH: 22, BR: 29,
CH: 21, CR: 21, CY: 28, CZ: 24, DE: 22, DK: 18, DO: 28, EE: 20, ES: 24,
FI: 18, FO: 18, FR: 27, GB: 22, GI: 23, GL: 18, GR: 27, GT: 28, HR: 21,
HU: 28, IE: 22, IL: 23, IS: 26, IT: 27, JO: 30, KW: 30, KZ: 20, LB: 28,
LI: 21, LT: 20, LU: 20, LV: 21, MC: 27, MD: 24, ME: 22, MK: 19, MR: 27,
MT: 31, MU: 30, NL: 18, NO: 15, PK: 24, PL: 28, PS: 29, PT: 25, QA: 29,
RO: 24, RS: 22, SA: 24, SE: 24, SI: 19, SK: 24, SM: 27, TN: 24, TR: 26
};
var iban = String(input).toUpperCase().replace(/[^A-Z0-9]/g, ''), // keep only alphanumeric characters
code = iban.match(/^([A-Z]{2})(\d{2})([A-Z\d]+)$/), // match and capture (1) the country code, (2) the check digits, and (3) the rest
digits;
// check syntax and length
if (!code || iban.length !== CODE_LENGTHS[code[1]]) {
return false;
}
// rearrange country code and check digits, and convert chars to ints
digits = (code[3] + code[1] + code[2]).replace(/[A-Z]/g, function (letter) {
return letter.charCodeAt(0) - 55;
});
// final check
return mod97(digits);
}
function mod97(string) {
var checksum = string.slice(0, 2), fragment;
for (var offset = 2; offset < string.length; offset += 7) {
fragment = String(checksum) + string.substring(offset, offset + 7);
checksum = parseInt(fragment, 10) % 97;
}
return checksum;
}
这也是一个有效的fiddle
答案 2 :(得分：6)
“Jquery验证插件”也支持iban检查：
https://github.com/jzaefferer/jquery-validation/blob/master/src/additional/iban.js
答案 3 :(得分：1)
基于先前的答案，我创建了一个实现Angular Directive方法的Validator。
我还添加了类型。
iban-validator.directive.ts
import { Validator, AbstractControl, NG_VALIDATORS } from '@angular/forms';
import { Directive } from '@angular/core';
@Directive({
selector: '[ibanValidators]',
providers: [{
provide: NG_VALIDATORS,
useExisting: IbanValidatorDirective,
multi: true
}]
})
export class IbanValidatorDirective implements Validator {
validate(control: AbstractControl): { ibanValid: boolean; } | object {
const codeLengths = {
AD: 24, AE: 23, AL: 28, AT: 20, AZ: 28, BA: 20, BE: 16, BG: 22, BH: 22, BR: 29, CH: 21, CR: 21, CY: 28, CZ: 24,
DE: 22, DK: 18, DO: 28, EE: 20, ES: 24, LC: 30, FI: 18, FO: 18, FR: 27, GB: 22, GI: 23, GL: 18, GR: 27, GT: 28,
HR: 21, HU: 28, IE: 22, IL: 23, IS: 26, IT: 27, JO: 30, KW: 30, KZ: 20, LB: 28, LI: 21, LT: 20, LU: 20, LV: 21,
MC: 27, MD: 24, ME: 22, MK: 19, MR: 27, MT: 31, MU: 30, NL: 18, NO: 15, PK: 24, PL: 28, PS: 29, PT: 25, QA: 29,
RO: 24, RS: 22, SA: 24, SE: 24, SI: 19, SK: 24, SM: 27, TN: 24, TR: 26
};
if (control.value) {
const iban = control.value.toUpperCase().replace(/[^A-Z0-9]/g, '');
const code = iban.match(/^([A-Z]{2})(\d{2})([A-Z\d]+)$/);
let digits: number;
if (!code || iban.length !== codeLengths[code[1]]) {
return { ibanValid: false };
}
digits = (code[3] + code[1] + code[2]).replace(/[A-Z]/g, (letter: string) => {
return letter.charCodeAt(0) - 55;
});
return this.mod97(digits) === 1 ? null : { ibanValid: false };
}
}
private mod97(digital: number | string) {
digital = digital.toString();
let checksum: number | string = digital.slice(0, 2);
let fragment = '';
for (let offset = 2; offset < digital.length; offset += 7) {
fragment = checksum + digital.substring(offset, offset + 7);
checksum = parseInt(fragment, 10) % 97;
}
return checksum;
}
}
然后仅在输入上使用指令。
答案 4 :(得分：0)
我知道这是一个老话题，但是由于它出现在Google的第一名，并且由于这里的解决方案还没有真正完善，我想向您展示我的看法：
export const validIban = (value) => {
let rearrange =
value.substring(4, value.length)
+ value.substring(0, 4);
let alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".split('');
let alphaMap = {};
let number = [];
alphabet.forEach((value, index) => {
alphaMap[value] = index + 10;
});
rearrange.split('').forEach((value, index) => {
number[index] = alphaMap[value] || value;
});
return modulo(number.join('').toString(), 97) === 1;
}
const modulo = (aNumStr, aDiv) => {
var tmp = "";
var i, r;
for (i = 0; i < aNumStr.length; i++) {
tmp += aNumStr.charAt(i);
r = tmp % aDiv;
tmp = r.toString();
}
return tmp / 1;
}
它对我来说很好用，您可以用
validIban(testThis) / http://randomiban.com
答案 5 :(得分：-1)
我回答了类似的问题。使用此正则表达式列表来验证您的IBANS。有70个国家/地区，所以总体来说您应该不错。
AL[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){2}([a-zA-Z0-9]{4}\s?){4}\s?
AD[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){2}([a-zA-Z0-9]{4}\s?){3}\s?
AT[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}\s?
AZ[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([0-9]{4}\s?){5}\s?
BH[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([a-zA-Z0-9]{4}\s?){3}([a-zA-Z0-9]{2})\s?
BY[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([0-9]{4}\s?){5}\s?
BE[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}\s?
BA[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}\s?
BR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}([0-9]{3})([a-zA-Z]{1}\s?)([a-zA-Z0-9]{1})\s?
BG[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){1}([0-9]{2})([a-zA-Z0-9]{2}\s?)([a-zA-Z0-9]{4}\s?){1}([a-zA-Z0-9]{2})\s?
CR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{2})\s?
HR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{1})\s?
CY[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){2}([a-zA-Z0-9]{4}\s?){4}\s?
CZ[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}\s?
DK[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}([0-9]{2})\s?
DO[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){5}\s?
TL[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{3})\s?
EE[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}\s?
FO[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}([0-9]{2})\s?
FI[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}([0-9]{2})\s?
FR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){2}([0-9]{2})([a-zA-Z0-9]{2}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{1})([0-9]{2})\s?
GE[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{2})([0-9]{2}\s?)([0-9]{4}\s?){3}([0-9]{2})\s?
DE[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{2})\s?
GI[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([a-zA-Z0-9]{4}\s?){3}([a-zA-Z0-9]{3})\s?
GR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){1}([0-9]{3})([a-zA-Z0-9]{1}\s?)([a-zA-Z0-9]{4}\s?){3}([a-zA-Z0-9]{3})\s?
GL[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}([0-9]{2})\s?
GT[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([a-zA-Z0-9]{4}\s?){5}\s?
HU[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){6}\s?
IS[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}([0-9]{2})\s?
IE[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([0-9]{4}\s?){3}([0-9]{2})\s?
IL[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{3})\s?
IT[a-zA-Z0-9]{2}\s?([a-zA-Z]{1})([0-9]{3}\s?)([0-9]{4}\s?){1}([0-9]{3})([a-zA-Z0-9]{1}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{3})\s?
JO[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){5}([0-9]{2})\s?
KZ[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}([0-9]{1})([a-zA-Z0-9]{3}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{2})\s?
XK[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){1}([0-9]{4}\s?){2}([0-9]{2})([0-9]{2}\s?)\s?
KW[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([a-zA-Z0-9]{4}\s?){5}([a-zA-Z0-9]{2})\s?
LV[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([a-zA-Z0-9]{4}\s?){3}([a-zA-Z0-9]{1})\s?
LB[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){1}([a-zA-Z0-9]{4}\s?){5}\s?
LI[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){1}([0-9]{1})([a-zA-Z0-9]{3}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{1})\s?
LT[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}\s?
LU[a-zA-Z0-9]{2}\s?([0-9]{3})([a-zA-Z0-9]{1}\s?)([a-zA-Z0-9]{4}\s?){3}\s?
MK[a-zA-Z0-9]{2}\s?([0-9]{3})([a-zA-Z0-9]{1}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{1})([0-9]{2})\s?
MT[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){1}([0-9]{1})([a-zA-Z0-9]{3}\s?)([a-zA-Z0-9]{4}\s?){3}([a-zA-Z0-9]{3})\s?
MR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}([0-9]{3})\s?
MU[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){4}([0-9]{3})([a-zA-Z]{1}\s?)([a-zA-Z]{2})\s?
MC[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){2}([0-9]{2})([a-zA-Z0-9]{2}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{1})([0-9]{2})\s?
MD[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{2})([a-zA-Z0-9]{2}\s?)([a-zA-Z0-9]{4}\s?){4}\s?
ME[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{2})\s?
NL[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){2}([0-9]{2})\s?
NO[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){2}([0-9]{3})\s?
PK[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([0-9]{4}\s?){4}\s?
PS[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([0-9]{4}\s?){5}([0-9]{1})\s?
PL[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){6}\s?
PT[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}([0-9]{1})\s?
QA[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([a-zA-Z0-9]{4}\s?){5}([a-zA-Z0-9]{1})\s?
RO[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([a-zA-Z0-9]{4}\s?){4}\s?
SM[a-zA-Z0-9]{2}\s?([a-zA-Z]{1})([0-9]{3}\s?)([0-9]{4}\s?){1}([0-9]{3})([a-zA-Z0-9]{1}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{3})\s?
SA[a-zA-Z0-9]{2}\s?([0-9]{2})([a-zA-Z0-9]{2}\s?)([a-zA-Z0-9]{4}\s?){4}\s?
RS[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){4}([0-9]{2})\s?
SK[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}\s?
SI[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){3}([0-9]{3})\s?
ES[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}\s?
SE[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}\s?
CH[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){1}([0-9]{1})([a-zA-Z0-9]{3}\s?)([a-zA-Z0-9]{4}\s?){2}([a-zA-Z0-9]{1})\s?
TN[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){5}\s?
TR[a-zA-Z0-9]{2}\s?([0-9]{4}\s?){1}([0-9]{1})([a-zA-Z0-9]{3}\s?)([a-zA-Z0-9]{4}\s?){3}([a-zA-Z0-9]{2})\s?
AE[a-zA-Z0-9]{2}\s?([0-9]{3})([0-9]{1}\s?)([0-9]{4}\s?){3}([0-9]{3})\s?
GB[a-zA-Z0-9]{2}\s?([a-zA-Z]{4}\s?){1}([0-9]{4}\s?){3}([0-9]{2})\s?
VA[a-zA-Z0-9]{2}\s?([0-9]{3})([0-9]{1}\s?)([0-9]{4}\s?){3}([0-9]{2})\s?
VG[a-zA-Z0-9]{2}\s?([a-zA-Z0-9]{4}\s?){1}([0-9]{4}\s?){4}\s?
答案 6 :(得分：-1)
我已设法根据当前格式创建以下 RegEx 以进行快速验证。
/^(?:(?:IT|SM)\d{2}[A-Z]\d{22}|NL\d{2}[A-Z]{4}\d{10}|RO\d{2}[A-Z]{4}\d[A-Z]\d{14}|LV\d{2}[A-Z]{4}\d{13}|FR\d{19}[A-Z]\d{5}|LI\d{17}[A-Z]{2}|MD\d{2}[A-Z]{2}\d{18}|(?:BG|GB|IE)\d{2}[A-Z]{4}\d{14}|BH\d{2}[A-Z]{4}\d{10}[A-Z]{2}\d{2}|GE\d{2}[A-Z]{2}\d{16}|GI\d{2}[A-Z]{4}\d{15}|BR\d{25}[A-Z]\d|MU\d{2}[A-Z]{4}\d{19}[A-Z]{3}|PS\d{2}[A-Z]{4}\d{21}|QA\d{2}[A-Z]{4}\d{14}[A-Z]{7}|(?:AZ|DO|GT)\d{2}[A-Z]{4}\d{20}|(?:BJ|ML|SN|CI)\d{2}[A-Z]\d{23}|(?:PK|VG)\d{2}[A-Z]{4}\d{16}|(?:KW|JO)\d{2}[A-Z]{4}\d{22}|MT\d{2}[A-Z]{4}\d{12}[A-Z]{7}\d{3}[A-Z]|NO\d{13}|(?:BE|BI)\d{14}|(?:DK|FI|GL|FO)\d{16}|(?:MK|SI)\d{17}|(?:BA|LT|AT|EE|KZ|LU|XK)\d{18}|(?:HR|CH|CR)\d{19}|(?:DE|ME|RS)\d{20}|(?:AE|IL|TL)\d{21}|(?:AD|CZ|ES|SA|DZ|SK|SE|TN)\d{22}|(?:PT|AO|CV|MZ)\d{23}|(?:IS|IR|TR)\d{24}|(?:MR|MC|BF|CM|GR|MG)\d{25}|(?:AL|DO|LB|PL|CY|HU)\d{26})$/i