Javascript Quiz: How well do you know Variables in Javascript

Publicado em: 04 Junho 2023
no canal de: Programming Geek

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Are you ready for another code challenge? Join me in this video as you test your coding knowledge with the simple quiz questions.

Don't forget to make your guess in the comments below.

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Answer OPTION: D) ReferenceError

Explanation:
The code defines a global variable x with an initial value of 10.

Inside the foo function, a local constant x is defined with a value of 20.

When console.log(x) is executed, it tries to access the value of the local x variable, but due to hoisting, the local variable is in the temporal dead zone and not accessible at that point.

Hence, a ReferenceError is thrown, indicating that the variable x is not yet defined.

Therefore, the output will be a ReferenceError.

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