Salesforce how2pass javascript-developer-i Exam Lab Questions by Digby q134 vce pdf

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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:

Object.const()

Object.eval()

Object.lock()

Object.freeze()

Discussion

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:

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

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

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

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:

Str1.join (str2);

Str1.concat (str2);

Concat (str1, str2);

$(str1) $ (str2} ‘;

Str1 + str2;

Discussion

Question 15

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

Choose 3 answers

Options:

IIFEs

indexedDB

Global variables

localStorage.

Discussion

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