WTF CoffeeScript

gistfile1.txt

# WHY RETURN STATEMENTS IN CONDITIONAL BLOCKS?????
# According to http://coffeescript.org/#conditionals the resulting code does NOT have a return statement.
  $("dl.card :text").change ()->
    $e = $(@)
    val = $e.val()
    odd = []
    even = []
    sum = 0
    $.each(val.split(""), (i, v)->
      # e should be defined as a local var. Instead, we get:
      # e;
      # var e;
      e
      if !(i % 2)
        # If even index, push odd digit as is. Actual:
        # return odd.push(v);
        odd.push(v)
      else
        e = ("" + (v * 2)).split("")
        # Odd index; push even digit post-processing. Actual:
        # return even.push(+e[0] + +e[1]);
        even.push(+e[0] + +e[1])
    )
    console.dir(odd)
    console.dir(even)