$.validator.addMethod("luhm", function(bankno) {
var lastNum=bankno.substr(bankno.length-1,1);
var first15Num=bankno.substr(0,bankno.length-1);
var newArr=new Array();
for(var i=first15Num.length-1;i>-1;i--){
newArr.push(first15Num.substr(i,1));
}
var arrJiShu=new Array();
var arrJiShu2=new Array();
var arrOuShu=new Array();
for(var j=0;j<newArr.length;j++){
if((j+1)%2==1){
if(parseInt(newArr[j])*2<9)
arrJiShu.push(parseInt(newArr[j])*2);
else
arrJiShu2.push(parseInt(newArr[j])*2);
}
else
arrOuShu.push(newArr[j]);
}
var jishu_child1=new Array();
var jishu_child2=new Array();
for(var h=0;h<arrJiShu2.length;h++){
jishu_child1.push(parseInt(arrJiShu2[h])%10);
jishu_child2.push(parseInt(arrJiShu2[h])/10);
}
var sumJiShu=0;
var sumOuShu=0;
var sumJiShuChild1=0;
var sumJiShuChild2=0;
var sumTotal=0;
for(var m=0;m<arrJiShu.length;m++){
sumJiShu=sumJiShu+parseInt(arrJiShu[m]);
}
for(var n=0;n<arrOuShu.length;n++){
sumOuShu=sumOuShu+parseInt(arrOuShu[n]);
}
for(var p=0;p<jishu_child1.length;p++){
sumJiShuChild1=sumJiShuChild1+parseInt(jishu_child1[p]);
sumJiShuChild2=sumJiShuChild2+parseInt(jishu_child2[p]);
}
sumTotal=parseInt(sumJiShu)+parseInt(sumOuShu)+parseInt(sumJiShuChild1)+parseInt(sumJiShuChild2);
var k= parseInt(sumTotal)%10==0?10:parseInt(sumTotal)%10;
var luhm= 10-k;
if(lastNum==luhm){
return true;
}else{
return false;
}
}, "");