Credit Card Checker Challenge Project (JavaScript)

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1595

This is my attempt on the project CREDIT CARD CHECKER

Any suggestion is highly appreciated. Thanks

1596

hey guys if you enjoy check that out … I just finished All the code are commented – CRED CARD CHECKER

1597

Here is my GitHub contribution

Let me know if its okay!

1598

Wow, this challenge was really brain boggling for me, but I think I did it!

Here’s the link to my code if anyone would like to review it an offer suggestions, I’m all ears!

1599

Nothing new but i just did it.

GitHub

1600

Here is mine y’all! I had a tough time on this project but we love a challenge:

1601

Here is my code, any suggestion on optimize the code would be appreciated :smiling_face_with_three_hearts:

1602

Hello everyone :smiling_face:,
That’s my solution(The idinvalidcompanies side could be edited a bit more but I was exhausted :grin: ):

// 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:

function validateCred(array) {

let newArray = [...array];
let poppedNums = 0;
for (let i = 0; i < array.length; i++) {
    let num = newArray.pop();
    if (i % 2 === 1 ) {
        num *= 2;
        if (num > 9) { 
            num -= 9;
        };
    }; 
    poppedNums += num;
}
return poppedNums % 10 === 0;

};

console.log(validateCred(valid1));

function findInvalidCards(array) {
let invalidArray = ;
for (let i = 0; i < array.length; i++) {
if(!validateCred(array[i])) {
invalidArray.push(array[i])
}
}
return invalidArray;
}

function idInvalidCardCompanies (array) {
let resultArray = ;
for (let i = 0; i < array.length; i++) {
if(array[i][0] === 3) {
if(!resultArray.includes(‘Amex (American Express)’)) {
resultArray.push(‘Amex (American Express)’);
}
resultArray.push(array[i]);
continue;
} else if (array[i][0] === 4) {
if(!resultArray.includes(‘Visa’)) {
resultArray.push(‘Visa’);
};
resultArray.push(array[i]);
continue;
}else if (array[i][0] === 5) {
if (!resultArray.includes(‘Mastercard’)) {
resultArray.push(‘Mastercard’);
};
resultArray.push(array[i]);

  continue;
}else if (array[i][0] === 6) {
  if (!resultArray.includes('Discover')) {
    resultArray.push('Discover');
    };
  resultArray.push(array[i]);

  continue;
} else {
  resultArray.push('Company not found');
  resultArray.push(array[i]);
}}

return resultArray;
}

console.log(idInvalidCardCompanies([[4, 5, 3, 2, 7, 7, 8, 7, 7, 1, 0, 9, 1, 7, 9, 5], [5, 3, 8, 2, 0, 1, 9, 7, 7, 2, 8, 8, 3, 8, 5, 4],[6, 0, 1, 1, 1, 2, 7, 9, 6, 1, 7, 7, 7, 9, 3, 5], [5, 3, 8, 2, 0, 1, 9, 7, 7, 2, 8, 8, 3, 8, 5, 4] ]))

1603

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1604

Here is my solution!