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Block Scope ↔ Variable Lookup restrict to inside of Block

block scope !only applies to let & const variables

block scope does not apply to var variables which areFunction Scope

functions are block scoped only in strict mode

References​

  1. let ↔ JS Keyword to Declare mutable Variable with Block Scope

  2. const ↔ JS Keyword to Declare read-only named constant Variable with Block Scope