Question 1

Refer to the following array:

Let arr = [1, 2, 3, 4, 5];

Which three options result in x evaluating as [1, 2]?

Choose 3 answer

Alet x = arr. slice (2);

Blet x = arr. slice (0, 2);

Clet x arr.filter((a) => (return a <= 2 });

Dlet x = arr.filter ((a) => 2 }) ;

Elet x =arr.splice(0, 2);

Answer : B, C, E

Question 2

Refer to the following code:

What is the value of output on line 11?

A[1, 2]

B[''foo'', ''bar'']

C[''foo'':1, ''bar'':2'']

DAn error will occur due to the incorrect usage of the for...of statement on line 07.

Answer : D

Question 3

Refer to the code declarations below:

Which three expressions return the string JavaScript?

Choose 3 answers

AStr1.join (str2);

BStr1.concat (str2);

CConcat (str1, str2);

D$(str1) $ (str2} ';

EStr1 + str2;

Answer : B, D, E

Question 4

A developer has the following array of hourly wages:

Let arr = (8, 5, 9, 75, 11, 25, 7, 75, , 13, 25);

For workers making less than $10 an hour rate should be multiple by 1.25 and returned in a new array.

How should the developer implement the request?

Alet arrl = arr.filter((val) => val < 10).map((num) -> num = 1.25);

Blet arrl = arr .rr.acArray ((val) => ( val < 10 )) ,map((num) => { num * 1.25 ));

Clet arrl = arr-map((num) => { return ran * 1.25 }).filter((val) -> { return val < 10));

Dlet arrl = arr.filterBy((val) => val < 10 ).aapBy<(num) -> num = ..25 );

Answer : C

Question 5

A developer initiates a server with the file server,js and adds dependencies in the source codes package,json that are required to run the server.

Which command should the developer run to start the server locally?

Astart server,js

Bnpm start server,js

Cnpm start

Dnode start