Salesforce Exam Javascript Developer I Topic 2 Question 84 Discussion

Actual exam question for Salesforce's Javascript Developer I exam

Question #: 84
Topic #: 2

[All Javascript Developer I Questions]

Refer to the code below:

const addBy = ?

const addByEight =addBy(8);

const sum = addBYEight(50);

Which two functions can replace line 01 and return 58 to sum?

Choose 2 answers

Aconst addBy = function(num1){
return function(num2){
return num1 + num2;
}

Bconst addBy = function(num1){
return num1 + num2;
}

Cconst addBy = (num1) => num1 + num2 ;

Dconst addBY = (num1) => (num2) => num1 + num2;

Show Suggested Answer

Suggested Answer: A, D

by Marta at Jul 10, 2024, 11:52 PM

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Lou

8 months ago

I'm hungry just looking at this code. I wonder if there's a function that can add some snacks to the mix?

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Emile

8 months ago

Aha, Option D looks like the winner! Currying is the way to go here, nice and concise.

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Elly

9 months ago

Option C is interesting, but I'm not sure about the use of 'num2' when it's not defined. Hmm, curious.

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Aileen

8 months ago

D) const addBY = (num1) => (num2) => num1 + num2;

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Ronny

8 months ago

A) const addBy = function(num1){\nreturn function(num2){\nreturn num1 + num2;\n}

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Lettie

9 months ago

Option B is a no-go, it's missing a parameter. How can we add without a second number?

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Lenita

8 months ago

Yeah, option B is definitely not the right choice. We need that second parameter to add the numbers together.

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Carlota

8 months ago

C) const addBy = (num1) => num1 + num2 ;

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Armando

8 months ago

A) const addBy = function(num1){\nreturn function(num2){\nreturn num1 + num2;\n}

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Hannah

9 months ago

Option A looks good, but why do we need a nested function? Seems a bit overkill for such a simple task.

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Lisha

8 months ago

It's a matter of preference, some developers prefer nested functions for clarity.

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Jenelle

8 months ago

Nested functions can help with code organization and readability.

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Irene

9 months ago

Option A is more flexible and allows for currying, which can be useful in certain situations.

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Sage

9 months ago

I think option A and D are correct because they both return a function that adds two numbers.

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Cordelia

9 months ago

I'm not sure, but I think option B and C might work too.

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Chantell

9 months ago

I agree with Annett, option A and D both return the sum of two numbers.

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Annett

10 months ago

I think option A and D can replace line 01.

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