QuestenaUn entraînement qui indique quoi revoir ensuite
RechercheCréer un test
Question 93

An outer block declares let level = 1. A nested block declares its own let level = 2. What does level mean inside the nested block?

  1. It refers to the inner binding whose value is 2Bonne réponse
  2. It is permanently ambiguous between both bindings
  3. It refers to the outer binding because it was declared earlier
  4. Both declarations are duplicates in the same scope

Explication

The nested declaration shadows the outer binding, so references inside that nested scope resolve to the value 2. Shadowing does not overwrite or delete the outer level; after leaving the nested scope, the outer binding still has value 1.

Continuer avec ce test

Commencer l’entraînement
Comprendre ce thème (≈5 min)Retour au test
Question 93: An outer block declares let level = 1. A nested block… · JavaScript Fundamentals · Questena