JavaScript-Developer-I Exam Dumps | What are two unique features of functions defined with a fat arrow as compared to normal function definition?

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Question 5/110

What are two unique features of functions defined with a fat arrow as compared to normal function definition?
Choose 2 answers

A. If the function has a single expression in the function body, the expression will be evaluated and implicit returned.

B. The function generated its own this making it useful for separating the function's scope from its enclosing scope.

C. The function uses the this from the enclosing scope.

D. The function receives an argument that is always in scope, called parentThis, which is the enclosing lexical scope.

Correct Answer: B,D

Recent Comments (The most recent comments are at the top.)

Nsg - Oct 04, 2024

Correct answers are A and C.

Explanation of A
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions#:~:text=In%20an%20expression%20body%2C%20only%20a%20single%20expression%20is%20specified%2C%20which%20becomes%20the%20implicit%20return%20value.

Explanation of C
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions#:~:text=Arrow%20functions%20do%20not%20have%20their%20own%20arguments%20object.%20Thus%2C%20in%20this%20example%2C%20arguments%20is%20a%20reference%20to%20the%20arguments%20of%20the%20enclosing%20scope%3A

Alexander - Aug 20, 2024

Actually, the opposite is true :D

A, C

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