Hi everybody, I’m stuck with this project, I did this function,“validateCred” and it seems it’s working but when I’m going on with the next, I have this problem…
I have seen the solution, but I don’t understand why I can’t do it in this way…
this is the code
// All valid credit card numbers
const valid1 = [4, 5, 3, 9, 6, 7, 7, 9, 0, 8, 0, 1, 6, 8, 0, 8];
const valid2 = [5, 5, 3, 5, 7, 6, 6, 7, 6, 8, 7, 5, 1, 4, 3, 9];
const valid3 = [3, 7, 1, 6, 1, 2, 0, 1, 9, 9, 8, 5, 2, 3, 6];
const valid4 = [6, 0, 1, 1, 1, 4, 4, 3, 4, 0, 6, 8, 2, 9, 0, 5];
const valid5 = [4, 5, 3, 9, 4, 0, 4, 9, 6, 7, 8, 6, 9, 6, 6, 6];
// All invalid credit card numbers
const invalid1 = [4, 5, 3, 2, 7, 7, 8, 7, 7, 1, 0, 9, 1, 7, 9, 5];
const invalid2 = [5, 7, 9, 5, 5, 9, 3, 3, 9, 2, 1, 3, 4, 6, 4, 3];
const invalid3 = [3, 7, 5, 7, 9, 6, 0, 8, 4, 4, 5, 9, 9, 1, 4];
const invalid4 = [6, 0, 1, 1, 1, 2, 7, 9, 6, 1, 7, 7, 7, 9, 3, 5];
const invalid5 = [5, 3, 8, 2, 0, 1, 9, 7, 7, 2, 8, 8, 3, 8, 5, 4];
// Can be either valid or invalid
const mystery1 = [3, 4, 4, 8, 0, 1, 9, 6, 8, 3, 0, 5, 4, 1, 4];
const mystery2 = [5, 4, 6, 6, 1, 0, 0, 8, 6, 1, 6, 2, 0, 2, 3, 9];
const mystery3 = [6, 0, 1, 1, 3, 7, 7, 0, 2, 0, 9, 6, 2, 6, 5, 6, 2, 0, 3];
const mystery4 = [4, 9, 2, 9, 8, 7, 7, 1, 6, 9, 2, 1, 7, 0, 9, 3];
const mystery5 = [4, 9, 1, 3, 5, 4, 0, 4, 6, 3, 0, 7, 2, 5, 2, 3];
// An array of all the arrays above
const batch = [valid1, valid2, valid3, valid4, valid5, invalid1, invalid2, invalid3, invalid4, invalid5, mystery1, mystery2, mystery3, mystery4, mystery5];
// Add your functions below:
validateCred=array=>{
let newArray = [];
console.log(array);
array.pop();
newArray = array.reverse();
console.log(newArray);
let sumReverse = 0;
for(let i = 0;i < newArray.length; i++){
let multiPosicion = 0;
//console.log(i+1);
if(i !=0 && i % 2 != 0){
//console.log(newArray[i]*2);
multiPosicion += newArray[i] * 2;
//console.log(multiPosicion);
//sumReverse += multiPosicion;
//console.log(sumReverse);
}
if(multiPosicion>9){
multiPosicion -= 9;
console.log(multiPosicion);
sumReverse += multiPosicion;
}else{
sumReverse += multiPosicion;
}
}
//console.log(sumReverse);
return sumReverse%10 ==0 ? true: false;
};
function findInvalidCards(array){
const invalidCard = [];
for(let i= 0; i< array.length; i++){
let creditCard = array[i];
//console.log(creditCard);
if(validateCred(creditCard) === false ){
console.log(validateCred(creditCard));
invalidCard.push(array[i]);
}
}
return invalidCard;
};
//array.forEach(element=>console.log(element));
//console.log(array.reverse());
console.log(validateCred(valid1));
console.log(validateCred(invalid1));
console.log(findInvalidCards(invalid1));
and this is the error message...
/home/ccuser/workspace/credit-card-checker/main.js:32
array.pop();
^
TypeError: array.pop is not a function
at validateCred
Any help I aprecciate it...
Thank you