How crazy is hoisting?

One quick trick to find out.

function hoist(track) {
  if (track === 'Billie Jean') {
    action = 'dance';
  } else {
    action = 'chill';
  }

  return action;
  var action;
}

hoist('Billie Jean');

console.log(action);

The variable action still get localized to the scope of hoist. That is the var action works, even though it comes after return. Note that the global scope has no access to action