>>> "Test___1___".split(/___/,3)
Array 
  0 "Test"
  1 "1"
  2 ""
  length 3
  Array
    Object["Test", "1", ""]
>>> "Test___1___".split(/___/,2)
Array 
  0 "Test"
  1 "1"
  length 2
  Array
    Object["Test", "1"]