• Execution Context
  • A wrapper to help manage the code that is running.
• Lexical Environment
  • Where something sits physically in the code you write.
• Object
  • A collection of Name/Value pairs
    • This is the simplest definition of an Object as it pertains to Javascript.

Address: {
  Street: 'Main',
  Number: 100,
  Apartment: {
    Floor: 3,
    Number: 301
  }
}

• Name / Value Pair
  • A Name which maps to a unique value
    • Address = ‘100 Main St”
• Syntax Parser
  • A program that reads your code and determines if it is valid or not.