Codecademy export

main.js

// 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:
var total;
function validateCred (anArray){
  for (let i=15; i>=0; i--){
         console.log(i);
        if (i%2===0){
       var no=anArray[i]*2;
         if (no>9){
         no=no-9;
        total = total+no;
        
       }
     } else {
       total=total+anArray[i];
       }
  }
         if (total%10===0) {
    return true;

    } else {return false;}
}

console.log(validateCred(valid2));

var companylist=[];
function idInvalidCardCompanies(card) {
for (let k=0; k<batch.legnth; k++){
  if (validateCred(batch[k])===false){
    var card=batch[k];
   for (let l=0;l<16;l++){
     switch (card[0]){
       case 3:
       companyList.push['Amex (American Express'];
       break;
       case 4:
       companyList.push['Visa'];
       break;
       case 5:
       companyList.push['Mastercard'];
       break;
       case 6:
       companyList.push['Discover'];
       break;
       default:
       console.log('Company for Card no'+ batch[l]+'Not Found')
     }
   }
  }
}
}


for (let m=0; m<companyList.length; m++) {
  for (let n=0; m<companyList.length;n++){
    if (companyList[m]===companyList[n] && m!==n){
      companyList.splice[n,1];
    }
  }
}

for (let o=0; o<companyList.length; o++){
console.log(companyList[o]);
}