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Variable scope, closure, Variable scope, closure - Coggle Diagram

- - - - 1.the Lexical Environment is pre-populated with all declared variables
      - definition appears.
      - Assign a value
  - - - (unlike let, that is unusable till the declaration).
  - - - A closure is a function that remembers its outer variables and can access them.
      - they automatically remember where they were created using a hidden [[Environment]] property
        
        and then their code can access outer variables.
      - in JavaScript, all functions are naturally closures
        
        exception( The "new Function" syntax).)