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Salesforce Updated JavaScript-Developer-I Exam Questions and Answers by digby

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Salesforce JavaScript-Developer-I Exam Overview :

Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
Exam Code: JavaScript-Developer-I Dumps
Vendor: Salesforce Certification: Salesforce Developer
Questions: 219 Q&A's Shared By: digby
Question 12

A developer creates an object where its properties should be immutable and prevent

properties from being added or modified.

Which method should be used to execute this business requirement ?

Options:

A.

Object.const()

B.

Object.eval()

C.

Object.lock()

D.

Object.freeze()

Discussion
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Question 13

A developer has the following array of student test grades:

Let arr = [ 7, 8, 5, 8, 9 ];

The Teacher wants to double each score and then see an array of the students

who scored more than 15 points.

How should the developer implement the request?

Options:

A.

Let arr1 = arr.filter(( val) => ( return val > 15 )) .map (( num) => ( return num *2 ))

B.

Let arr1 = arr.mapBy (( num) => ( return num *2 )) .filterBy (( val ) => return val > 15 )) ;

C.

Let arr1 = arr.map((num) => num*2). Filter (( val) => val > 15);

D.

Let arr1 = arr.map((num) => ( num *2)).filterBy((val) => ( val >15 ));

Discussion
Question 14

Refer to the code declarations below:

Questions 14

Which three expressions return the string JavaScript?

Choose 3 answers

Options:

A.

Str1.join (str2);

B.

Str1.concat (str2);

C.

Concat (str1, str2);

D.

$(str1) $ (str2} ‘;

E.

Str1 + str2;

Discussion
Question 15

Which three browser specific APIs are available for developers to persist data between page loads ?

Choose 3 answers

Options:

A.

IIFEs

B.

indexedDB

C.

Global variables

D.

Cookies

E.

localStorage.

Discussion
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