What is a key difference between `let` and `var` in JavaScript?

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Correct answer: A. `let` has block scope, while `var` has function scope

Explanation

let is block-scoped (limited to its enclosing block), while var is function-scoped — a key ES6 improvement that reduces common bugs.

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Mediumjavascriptes6

Show answer & explanation

Correct answer: A. `let` has block scope, while `var` has function scope

Explanation

let is block-scoped (limited to its enclosing block), while var is function-scoped — a key ES6 improvement that reduces common bugs.

Practise 3 questions on this topic

Take JavaScript ES6 Features — Timed Test (3 questions) — scored instantly, explanation for every question, no login.

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