Counting Cards (using addition operator instead of increment)

I completed the challenge but if i use an addition or subtraction operator in the switch statement such as count + 1 instead of ++count the function doesn’t work, can someone please explain this behavior to me.

Thanks.

Your code so far


var count = 0;

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

  // 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');
console.log(cc(4))

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36.

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

count++ is the same as writing count = count + 1 or count += 1.

It doesn’t work when you do count + 1 because it is doing the sum but not updating the variable count which can be fixed by assigning the new result count = count + 1 like stated above

The same applies to the minus operation count - 1, it needs to be count = count - 1 or count -= 1

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