Card Counting ! (in javascript)

JavaScript
1

I feel like I’m hopeless at javascript. As soon as I’m ‘sort-of’ understanding a topic we move past it in the curriculum. I can’t pass the Card Counting exercise. Here’s my code:

var count = 0;

function cc(card) {
  // Only change code below this line
  switch(card){  
    case 2:
    case 3:
    case 4:
    case 5:
    case 6:
   return count +=1;
    break;
    case 7:
    case 8:
    case 9:
    return count +=0;
    break;
    case 10:
    case "J":
    case "Q":
    case "K":
    case "A":
  return count -=1;
    break;
  }
  if (count > 0){
    return count + "Bet";
    } else { 
      return count + "Hold";
    }
    return "7";
  // Only change code above this line
}

// Add/remove calls to test your function.
// Note: Only the last will display
cc(2); cc(3); cc(7); cc('K'); cc('A');

Here’s the link to the exercise:

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/counting-cards/

Why do I fail!?

3

I tried this and I get the same result. all tests failed. I’m not understanding. I think I’m just going to skip this challenge and come back to it.

function cc(card) {
  // Only change code below this line
  switch (card){
    case 2:
    case 3:
    case 4:
    case 5:
    case 6:
    count++;
    break;
    case 10:
    case "J":
    case "Q":
    case "K":
    case "A":
    count--;
    break;
  }
  if (count > 0) {
    return count + "Bet"
  } else {
    return count + "Hold"
  }
  return "Change Me";
  // Only change code above this line
}
4

I’m banging my head against the wall and getting nowhere. I’m going to skip for now and come back to it when I understand JS better.

6

Okay, I’ll try that.