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Question 85

A let binding named total is declared inside an if block. Where is that binding accessible?

  1. Inside that block and its nested scopesBonne réponse
  2. Everywhere in the containing function after the block
  3. Only on the single line where it is declared
  4. In every function called from that block

Explication

A let declaration creates a block-scoped binding, so total is available within that block and scopes nested inside it. Treating it as function-wide confuses let with the function-scoped behavior of var declarations inside functions.

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Question 85: A let binding named total is declared inside an if block.… · JavaScript Fundamentals · Questena