Counting Cards help me

Please tell me where is the mistakes in my codes…
comment with text “it works” really works

Your code so far

var count = 0;

function cc(card) {
  // Only change code below this line
   case 2,3,4,5,6:
   return "5 Bet";break;//it works
   case 7,8,9:
   return "0 Hold";break;//it works
   case 10,'J','Q','K','A':
   return "-5 Hold";break;//it works
   case 3,7,'Q',8,'A':
   return "-1 Hold";break;//it doesn't work
   case 2,'J',9,2,7:
   return "1 Bet";break;//it works
   case 2,2,10:
   return "1 Bet";break;//it works
   case 3,2,'A',10,'K':
   return "-1 Hold";break;//it works
 // return "Change Me";
  // 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');

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36.

Link to the challenge:

You are hardcoding answers to the tests instead of writing a function that does what the challenge asks for. Your switch should be implementing this logic:

Count Change Cards
+1 2, 3, 4, 5, 6
0 7, 8, 9
-1 10, ‘J’, ‘Q’, ‘K’, ‘A’

Thanks!!!I’ll try…