Which three options show valid methods for creating a fat arrow function?
Choose 3 answers

• A.X,y,z => ( console.log(' executed ') ;)
• B.[ ] => ( console.log(' executed ') ;)
• C.(x,y,z) => ( console.log(' executed ') ;)
• D.( ) => ( console.log(' executed ') ;)
• E.x => ( console.log(' executed ') ; )

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A developer is required to write a function that calculates the sum of elements in an
array but is getting undefined every time the code is executed. The developer needs to find
what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?

• A.Replace line 03 with if(arr.length == 0 ) ( return 0; )
• B.Replace line 02 with return arr.map(( result, current) => (
• C.Replace line 04 with result = result +current;
• D.Replace line 05 with return result;

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Refer to the code below:

Considering that JavaScript is single-threaded, what is the output of line 08 after the code executes?

• A.13
• B.11
• C.12
• D.10

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Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.

• A.Use the browser console to execute a script that prevents the load event to be fired.
• B.Use the DOM inspector to prevent the load event to be fired.
• C.Use the DOM inspector to remove all the elements containing the class ad-library-item.
• D.Use the browser to execute a script that removes all the element containing the class ad-library-item.

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A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes.
A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.

Which two results occur when running this test on the updated sum3 function?
Choose 2 answers

• A.The line 02 assertion fails.
• B.The line 02 assertion passes.
• C.The line 05 assertion fails.
• D.The line 05 assertion passes.

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