While creating JavaScript with ASP.NET MVC I noticed several scope warnings and realized that I am missing something with understanding the variable scope inside the switch / case statement.

Warning: 'i' is already defined referring to case b and case c

My code looks similar to this:

switch(element) {
  case 'a':
   for(var i=0; i < count; i++){
    do something
   }
   break;

  case 'b':
   for(var i=0; i < count; i++){
    do something
   }
   break;

  case 'c':
   for(var i=0; i < count; i++){
    do something
   }
   break;
}

I thought scope ended with each break statement but it seems that scope does not end until the end of the switch/case. Is scope for the entire switch/case?