/*
* Dutch bank account numbers (not 'giro' numbers) have 9 digits
* and pass the '11 check'.
* We accept the notation with spaces, as that is common.
* acceptable: 123456789 or 12 34 56 789
*/
$.validator.addMethod( "bankaccountNL", function( value, element ) {
if ( this.optional( element ) ) {
return true;
}
if ( !( /^[0-9]{9}|([0-9]{2} ){3}[0-9]{3}$/.test( value ) ) ) {
return false;
}
// Now '11 check'
var account = value.replace( / /g, "" ), // Remove spaces
sum = 0,
len = account.length,
pos, factor, digit;
for ( pos = 0; pos < len; pos++ ) {
factor = len - pos;
digit = account.substring( pos, pos + 1 );
sum = sum + factor * digit;
}
return sum % 11 === 0;
}, "Please specify a valid bank account number" );
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