/* * 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 */$.validator.addMethod("bankaccountNL",function(value,element){if(this.optional(element)){returntrue;}if(!(/^[0-9]{9}|([0-9]{2}){3}[0-9]{3}$/.test(value))){returnfalse;}// now '11 check'varaccount=value.replace(/ /g,""),// remove spacessum=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;}returnsum%11===0;},"Please specify a valid bank account number");