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Salesforce JavaScript-Developer-I Exam Overview:

Certification Vendor:	Salesforce
Exam Name:	Salesforce Certified JavaScript Developer I
Exam Number:	JS-Dev-101
Exam Price:	$200 USD
Available Languages:	English
Real Exam Qty:	60 (plus up to 5 unscored pilot questions)
Exam Format:	Multiple-choice, Multiple-select
Passing Score:	65%
Related Certifications:	Salesforce Certified JavaScript Developer I Credential
Certificate Validity Period:	None (Credential does not expire)
Exam Duration:	105 minutes
Sample Questions:	Salesforce JavaScript-Developer-I Sample Questions
Exam Way:	Online (proctored via Pearson VUE) or On-site (at a Pearson VUE testing center)
Pre Condition:	None required. 1-2 years of JavaScript development experience (front-end and/or back-end) is strongly recommended. Note: To earn the full credential, candidates must also pass the Lightning Web Components Specialist Superbadge in addition to the JS-Dev-101 exam.
Official Syllabus URL:	https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi

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Salesforce JavaScript-Developer-I Certification is a valuable credential for developers who want to demonstrate their expertise in building custom solutions on the Salesforce platform using JavaScript. With proper preparation and study, candidates can successfully earn this certification and advance their careers in the Salesforce ecosystem.

Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q48-Q53):

NEW QUESTION # 48
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 ?

A. Object.freeze()
B. Object.eval()
C. Object.const()
D. Object.lock()

Answer: A

NEW QUESTION # 49
A developer creates a class that represents a blog post based on the requirement that a
Post should have a body author and view count.
The Code shown Below:
Class Post {
// Insert code here
This.body =body
This.author = author;
this.viewCount = viewCount;
}
}
Which statement should be inserted in the placeholder on line 02 to allow for a variable to be set
to a new instanceof a Post with the three attributes correctly populated?

A. constructor (body, author, viewCount) {
B. Function Post (body, author, viewCount) {
C. constructor() {
D. super (body, author, viewCount) {

Answer: A

NEW QUESTION # 50
A test has a dependency on database. query. During the test, the dependency is replaced with an object called database with the method, Calculator query, that returns an array. The developer does not need to verify how many times the method has been called.
Which two test approaches describe the requirement?
Choose 2 answers

A. Black box
B. Stubbing
C. Substitution
D. White box

Answer: C,D

NEW QUESTION # 51
Refer to the following code:

Which two statements could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers

A. 1eo.prototype.roar = ( ) => ( console.log (They\'re pretty good1'); );
B. 1eo.roar = () => 9 (console.log('They\'re pretty good1'); 1;
C. Object,assign(1eo, tony) ;
D. Object.assign, assign( 1eo, trigger);

Answer: B,C

NEW QUESTION # 52
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but
does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?

A. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } then {
08 getNextValue();
09 }
B. 03 try {
04 handleObjectValue(x)
05 ........................
C. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } finally {
08 getNextValue();
10 }
D. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 }
08 getNextValue();

Answer: B

NEW QUESTION # 53
......

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