[
  "INTRODUCTION",
  "VARIABLES",
  "STRINGS",
  "STRING LENGTH",
  "REVISING STRINGS",
  "NUMBERS",
  "ROUNDING NUMBERS",
  "NUMBER TO STRING",
  "IF STATEMENT",
  "FOR LOOP",
  "ARRAYS",
  "ARRAY FILTERING",
  "LOOPING THROUGH ARRAYS",
  "OBJECTS",
  "OBJECT PROPERTIES",
  "FUNCTIONS",
  "FUNCTION ARGUMENTS"
]