wteuber · January 15, 2016 13:00
diff --git a/iban_validator.js b/iban_validator.js
 /*
 https://gist.github.com/wteuber/2c481f5f81d2efd39d97
 https://jsfiddle.net/f6f2jves/2/

 <body>
  <input id="iban" type="text" size="30" autofocus><br>
  <span id="check">invalid IBAN</span>
 </body>
 */

 document.getElementById('iban').onkeyup = function () {
  if(validIban(this.value)) {
    document.getElementById('check').innerHTML = 'YAY! valid IBAN';
  } else {
    document.getElementById('check').innerHTML = 'invalid IBAN';
  }
  this.value = prettyPrint(this.value.replace(/\s/g, '').toUpperCase());
 };

 var allowedCountries = ['DE'];

 var ibanFormats = {
    AD: 'ADkk bbbb ssss cccc cccc cccc',
    AE: 'AEkk bbbc cccc cccc cccc ccc',
    AL: 'ALkk bbbs sssx cccc cccc cccc cccc',
    AT: 'ATkk bbbb bccc cccc cccc',
    AZ: 'AZkk bbbb cccc cccc cccc cccc cccc',
    BA: 'BAkk bbbs sscc cccc ccxx',
    BE: 'BEkk bbbc cccc ccxx',
    BG: 'BGkk bbbb ssss ddcc cccc cc',
    BH: 'BHkk bbbb cccc cccc cccc cc',
    BR: 'BRkk bbbb bbbb ssss sccc cccc cccc c',
    CH: 'CHkk bbbb bccc cccc cccc c',
    CR: 'CRkk bbbc cccc cccc cccc c',
    CY: 'CYkk bbbs ssss cccc cccc cccc cccc',
    CZ: 'CZkk bbbb ssss sscc cccc cccc',
    DE: 'DEkk bbbb bbbb cccc cccc cc',
    DK: 'DKkk bbbb cccc cccc cc',
    DO: 'DOkk bbbb cccc cccc cccc cccc cccc',
    EE: 'EEkk bbss cccc cccc cccx',
    ES: 'ESkk bbbb gggg xxcc cccc cccc',
    FI: 'FIkk bbbb bbcc cccc cx',
    FO: 'FOkk bbbb cccc cccc cx',
    FR: 'FRkk bbbb bggg ggcc cccc cccc cxx',
    GB: 'GBkk bbbb ssss sscc cccc cc',
    GE: 'GEkk bbcc cccc cccc cccc cc',
    GI: 'GIkk bbbb cccc cccc cccc ccc',
    GL: 'GLkk bbbb cccc cccc cc',
    GR: 'GRkk bbbs sssc cccc cccc cccc ccc',
    GT: 'GTkk bbbb cccc cccc cccc cccc cccc',
    HR: 'HRkk bbbb bbbc cccc cccc c',
    HU: 'HUkk bbbs sssx cccc cccc cccc cccx',
    IE: 'IEkk aaaa bbbb bbcc cccc cc',
    IL: 'ILkk bbbn nncc cccc cccc ccc',
    IS: 'ISkk bbbb sscc cccc iiii iiii ii',
    IT: 'ITkk xaaa aabb bbbc cccc cccc ccc',
    KW: 'KWkk bbbb cccc cccc cccc cccc cccc cc',
    KZ: 'KZkk bbbc cccc cccc cccc',
    LB: 'LBkk bbbb cccc cccc cccc cccc cccc',
    LI: 'LIkk bbbb bccc cccc cccc c',
    LT: 'LTkk bbbb bccc cccc cccc',
    LU: 'LUkk bbbc cccc cccc cccc',
    LV: 'LVkk bbbb cccc cccc cccc c',
    MC: 'MCkk bbbb bsss sscc cccc cccc cxx',
    MD: 'MDkk bbcc cccc cccc cccc cccc',
    ME: 'MEkk bbbc cccc cccc cccc xx',
    MK: 'MKkk bbbc cccc cccc cxx',
    MR: 'MRkk bbbb bsss sscc cccc cccc cxx',
    MT: 'MTkk bbbb ssss sccc cccc cccc cccc ccc',
    MU: 'MUkk bbbb bbss cccc cccc cccc cccc cc',
    NL: 'NLkk bbbb cccc cccc cc',
    NO: 'NOkk bbbb cccc ccx',
    PK: 'PKkk bbbb cccc cccc cccc cccc',
    PL: 'PLkk bbbs sssx cccc cccc cccc cccc',
    PS: 'PSkk bbbb xxxx xxxx xccc cccc cccc c',
    PT: 'PTkk bbbb ssss cccc cccc cccx x',
    RO: 'ROkk bbbb cccc cccc cccc cccc',
    RS: 'RSkk bbbc cccc cccc cccc xx',
    SA: 'SAkk bbcc cccc cccc cccc cccc',
    SE: 'SEkk bbbc cccc cccc cccc cccc',
    SI: 'SIkk bbss sccc cccc cxx',
    SK: 'SKkk bbbb ssss sscc cccc cccc',
    SM: 'SMkk xaaa aabb bbbc cccc cccc ccc',
    TN: 'TNkk bbss sccc cccc cccc cccc',
    TR: 'TRkk bbbb bxcc cccc cccc cccc cc',
    VG: 'VGkk bbbb cccc cccc cccc cccc'
  };
  
  function validIban(iban) {
    var isValid = false,
      iban = iban.replace(/\s/g, '').toUpperCase(),
      country = iban.substr(0, 2);

      if (ibanFormats.hasOwnProperty(country)) {
      var format = ibanFormats[country].replace(/\s/g, ''),
        length = format.length,
        checkDigits = iban.charFormatMatch(format, 'k').replace(/\s/g, '');
      debugger
      isValid = isAllowedCountry(country, allowedCountries) &&
        isValidLength(iban, length) &&
        isValidFormat(iban) &&
        isValidChecksum(iban, checkDigits);
    }
    return isValid;
  }

  function checkDigits(iban) {
    var idx, ord, chars;

    iban = iban.replace(/\s/g, '');
    iban = iban.substr(0, 2) + '00' + iban.substr(4);
    iban = iban.substr(4) + iban.substr(0, 4);
    chars = iban.split('') || [];
    for (idx = 0; idx < chars.length; idx += 1) {
      ord = chars[idx].charCodeAt(0);
      if (ord >= 65 && ord <= 90) {
        chars[idx] = (ord - 55).toString();
      }
    }
    iban = chars.join('');
    iban = modulo(iban, 97);
    iban = (98 - iban);
    iban = (iban < 10) ? ("0" + iban.toString()) : iban.toString();

    return iban;
  }
  
  function prettyPrint(iban) {
    iban = iban.replace(/\s/g, '').toUpperCase();
    iban = iban.match(/[0-9A-Z]{1,4}/g) || [];
    return iban.join(' ');
  }
 	
  function modulo(divident, divisor) {
    var part, partLength = 10;

    while (divident.length > partLength) {
      part = divident.substring(0, partLength);
      divident = (part % divisor) + divident.substring(partLength);
    }

    return divident % divisor;
  }
  
  var isValidLength = function (iban, length) {
    return !isTooShort(iban, length) && !isTooLong(iban, length)
  }

  function isTooShort(iban, min_length) {
    var isValid = iban.length >= min_length;
    return !isValid;
  }

  function isTooLong(iban, max_length) {
    var isValid = iban.length <= max_length;
    return !isValid;
  }

  function isValidFormat(iban) {
    var isValid = /^[A-Z]{2}[0-9]{2}[0-9A-Z]+$/.test(iban);
    return isValid;
  }

  function isAllowedCountry(country, allowed_countries) {
    var isValid = allowed_countries.contains('ALL') || allowed_countries.contains(country);
    return isValid;
  }

  function isValidChecksum(iban, digits) {
    var isValid = (checkDigits(iban) == digits);
    return isValid;
  }
  
  Array.prototype.contains = function(obj) {
      var i = this.length;
      while (i--) {
          if (this[i] === obj) {
              return true;
          }
      }
      return false;
  };
  
  String.prototype.charFormatMatch = function (format, match) {
  'use strict';

  var frmt = format.substr(0, this.length),
    result = '',
    chars = frmt.split(''),
    idx = 0;

  if (typeof match === 'string') {
    for (idx = 0; idx < chars.length; idx += 1) {
      result += (frmt[idx] === match) ? this[idx] : ' ';
    }
  }
  return result;
 };
	/*
	https://gist.github.com/wteuber/2c481f5f81d2efd39d97
	https://jsfiddle.net/f6f2jves/2/

	<body>
	<input id="iban" type="text" size="30" autofocus><br>
	<span id="check">invalid IBAN</span>
	</body>
	*/

	document.getElementById('iban').onkeyup = function () {
	if(validIban(this.value)) {
	document.getElementById('check').innerHTML = 'YAY! valid IBAN';
	} else {
	document.getElementById('check').innerHTML = 'invalid IBAN';
	}
	this.value = prettyPrint(this.value.replace(/\s/g, '').toUpperCase());
	};

	var allowedCountries = ['DE'];

	var ibanFormats = {
	AD: 'ADkk bbbb ssss cccc cccc cccc',
	AE: 'AEkk bbbc cccc cccc cccc ccc',
	AL: 'ALkk bbbs sssx cccc cccc cccc cccc',
	AT: 'ATkk bbbb bccc cccc cccc',
	AZ: 'AZkk bbbb cccc cccc cccc cccc cccc',
	BA: 'BAkk bbbs sscc cccc ccxx',
	BE: 'BEkk bbbc cccc ccxx',
	BG: 'BGkk bbbb ssss ddcc cccc cc',
	BH: 'BHkk bbbb cccc cccc cccc cc',
	BR: 'BRkk bbbb bbbb ssss sccc cccc cccc c',
	CH: 'CHkk bbbb bccc cccc cccc c',
	CR: 'CRkk bbbc cccc cccc cccc c',
	CY: 'CYkk bbbs ssss cccc cccc cccc cccc',
	CZ: 'CZkk bbbb ssss sscc cccc cccc',
	DE: 'DEkk bbbb bbbb cccc cccc cc',
	DK: 'DKkk bbbb cccc cccc cc',
	DO: 'DOkk bbbb cccc cccc cccc cccc cccc',
	EE: 'EEkk bbss cccc cccc cccx',
	ES: 'ESkk bbbb gggg xxcc cccc cccc',
	FI: 'FIkk bbbb bbcc cccc cx',
	FO: 'FOkk bbbb cccc cccc cx',
	FR: 'FRkk bbbb bggg ggcc cccc cccc cxx',
	GB: 'GBkk bbbb ssss sscc cccc cc',
	GE: 'GEkk bbcc cccc cccc cccc cc',
	GI: 'GIkk bbbb cccc cccc cccc ccc',
	GL: 'GLkk bbbb cccc cccc cc',
	GR: 'GRkk bbbs sssc cccc cccc cccc ccc',
	GT: 'GTkk bbbb cccc cccc cccc cccc cccc',
	HR: 'HRkk bbbb bbbc cccc cccc c',
	HU: 'HUkk bbbs sssx cccc cccc cccc cccx',
	IE: 'IEkk aaaa bbbb bbcc cccc cc',
	IL: 'ILkk bbbn nncc cccc cccc ccc',
	IS: 'ISkk bbbb sscc cccc iiii iiii ii',
	IT: 'ITkk xaaa aabb bbbc cccc cccc ccc',
	KW: 'KWkk bbbb cccc cccc cccc cccc cccc cc',
	KZ: 'KZkk bbbc cccc cccc cccc',
	LB: 'LBkk bbbb cccc cccc cccc cccc cccc',
	LI: 'LIkk bbbb bccc cccc cccc c',
	LT: 'LTkk bbbb bccc cccc cccc',
	LU: 'LUkk bbbc cccc cccc cccc',
	LV: 'LVkk bbbb cccc cccc cccc c',
	MC: 'MCkk bbbb bsss sscc cccc cccc cxx',
	MD: 'MDkk bbcc cccc cccc cccc cccc',
	ME: 'MEkk bbbc cccc cccc cccc xx',
	MK: 'MKkk bbbc cccc cccc cxx',
	MR: 'MRkk bbbb bsss sscc cccc cccc cxx',
	MT: 'MTkk bbbb ssss sccc cccc cccc cccc ccc',
	MU: 'MUkk bbbb bbss cccc cccc cccc cccc cc',
	NL: 'NLkk bbbb cccc cccc cc',
	NO: 'NOkk bbbb cccc ccx',
	PK: 'PKkk bbbb cccc cccc cccc cccc',
	PL: 'PLkk bbbs sssx cccc cccc cccc cccc',
	PS: 'PSkk bbbb xxxx xxxx xccc cccc cccc c',
	PT: 'PTkk bbbb ssss cccc cccc cccx x',
	RO: 'ROkk bbbb cccc cccc cccc cccc',
	RS: 'RSkk bbbc cccc cccc cccc xx',
	SA: 'SAkk bbcc cccc cccc cccc cccc',
	SE: 'SEkk bbbc cccc cccc cccc cccc',
	SI: 'SIkk bbss sccc cccc cxx',
	SK: 'SKkk bbbb ssss sscc cccc cccc',
	SM: 'SMkk xaaa aabb bbbc cccc cccc ccc',
	TN: 'TNkk bbss sccc cccc cccc cccc',
	TR: 'TRkk bbbb bxcc cccc cccc cccc cc',
	VG: 'VGkk bbbb cccc cccc cccc cccc'
	};

	function validIban(iban) {
	var isValid = false,
	iban = iban.replace(/\s/g, '').toUpperCase(),
	country = iban.substr(0, 2);

	if (ibanFormats.hasOwnProperty(country)) {
	var format = ibanFormats[country].replace(/\s/g, ''),
	length = format.length,
	checkDigits = iban.charFormatMatch(format, 'k').replace(/\s/g, '');
	debugger
	isValid = isAllowedCountry(country, allowedCountries) &&
	isValidLength(iban, length) &&
	isValidFormat(iban) &&
	isValidChecksum(iban, checkDigits);
	}
	return isValid;
	}

	function checkDigits(iban) {
	var idx, ord, chars;

	iban = iban.replace(/\s/g, '');
	iban = iban.substr(0, 2) + '00' + iban.substr(4);
	iban = iban.substr(4) + iban.substr(0, 4);
	chars = iban.split('') \|\| [];
	for (idx = 0; idx < chars.length; idx += 1) {
	ord = chars[idx].charCodeAt(0);
	if (ord >= 65 && ord <= 90) {
	chars[idx] = (ord - 55).toString();
	}
	}
	iban = chars.join('');
	iban = modulo(iban, 97);
	iban = (98 - iban);
	iban = (iban < 10) ? ("0" + iban.toString()) : iban.toString();

	return iban;
	}

	function prettyPrint(iban) {
	iban = iban.replace(/\s/g, '').toUpperCase();
	iban = iban.match(/[0-9A-Z]{1,4}/g) \|\| [];
	return iban.join(' ');
	}

	function modulo(divident, divisor) {
	var part, partLength = 10;

	while (divident.length > partLength) {
	part = divident.substring(0, partLength);
	divident = (part % divisor) + divident.substring(partLength);
	}

	return divident % divisor;
	}

	var isValidLength = function (iban, length) {
	return !isTooShort(iban, length) && !isTooLong(iban, length)
	}

	function isTooShort(iban, min_length) {
	var isValid = iban.length >= min_length;
	return !isValid;
	}

	function isTooLong(iban, max_length) {
	var isValid = iban.length <= max_length;
	return !isValid;
	}

	function isValidFormat(iban) {
	var isValid = /^[A-Z]{2}[0-9]{2}[0-9A-Z]+$/.test(iban);
	return isValid;
	}

	function isAllowedCountry(country, allowed_countries) {
	var isValid = allowed_countries.contains('ALL') \|\| allowed_countries.contains(country);
	return isValid;
	}

	function isValidChecksum(iban, digits) {
	var isValid = (checkDigits(iban) == digits);
	return isValid;
	}

	Array.prototype.contains = function(obj) {
	var i = this.length;
	while (i--) {
	if (this[i] === obj) {
	return true;
	}
	}
	return false;
	};

	String.prototype.charFormatMatch = function (format, match) {
	'use strict';

	var frmt = format.substr(0, this.length),
	result = '',
	chars = frmt.split(''),
	idx = 0;

	if (typeof match === 'string') {
	for (idx = 0; idx < chars.length; idx += 1) {
	result += (frmt[idx] === match) ? this[idx] : ' ';
	}
	}
	return result;
	};
No results found