Build a Card Counting Assistant - Build a Card Counting Assistant

JavaScript
1

Tell us what’s happening:

for some reason when i use more than 2 console log’s on the function it return undefined. This seems to only be happening after the actually +1 an -1 of the count vairable

Your code so far

let count = 0;

function cardCounter (card) {
  if (2 <= card && card <= 6){
      count++;
  }
  else if(10 == card || card == "J" || card == "Q" || card == "K" || card == "A"){
     count--;
  };
// AFTER THIS POINT IT FAILES
  if (count <= 1){
     return `${count} Bet`
  }
  else if (count <= 0){
    return `${count} Hold`
  }
}

console.log(cardCounter(1))
console.log(cardCounter(2))
console.log(cardCounter(5))

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Challenge Information:

Build a Card Counting Assistant - Build a Card Counting Assistant

2

I did find the problem

  if (count <= 1){
     return `${count} Bet`
  }

My “crocodile teeth” was pointing the wrong way. But I dont under stand why it would trow undefined due to this?

3

The cardCounter function should return a string with current count and the string Bet if the count is positive.

Please review this instruction.

4

It didn’t go into the if or the else, so there was no return statement. Functions return undefined when there’s no return statement.

1 Like
5

Thank you. Is it a normal practice to put a fallback return at the end of a function?
Example.

 return "didnt return anything"
6

If the function is expected to return a value, it’s common to assign a default value to return, even if it’s an empty array or string, etc. But not all functions are expected to return a value i.e. if they are just performing a task

7

your two return are here, what would happen if count is higher than 1? what would be returned? that’s where undefined comes from

8

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