Salesforce Certified JavaScript Developer Exam Preparation Material | Salesforce Certified JavaScript Developer

Prepare for the Salesforce Certified JavaScript Developer with reliable study materials, practice questions, and key exam insights.

Prepare for the Salesforce Certified JavaScript Developer Salesforce Certified JavaScript Developer exam with CertQueen's independently developed study resources. Review important concepts, practice scenario-based questions, and use clear explanations to identify areas that require further study.

Question#1

A developer needs to debug a Node.js web server because a runtime error keeps occurring at one of the endpoints.
The developer wants to test the endpoint on a local machine and make the request against a local server to look at the behavior. In the source code, the server, js file will start the server. the developer wants to debug the Node.js server only using the terminal.
Which command can the developer use to open the CLI debugger in their current terminal window?

A. node -i server.js
B. node inspect server,js
C. node server,js inspect
D. node start inspect server,js

Question#2

Which statement accurately describes the behaviour of the async/ await keyworks?

A. The associated class contains some asynchronous functions.
B. The associated function will always return a promise
C. The associated function can only be called via asynchronous methods
D. The associated sometimes returns a promise.

Question#3

Refer to the code below:
Const pi = 3.1415326,
What is the data type of pi?

A. Double
B. Number
C. Decimal
D. Float

Question#4

A developer wants to create an object from a function in the browser using the code below.



What happens due to the lack of the mm keyword on line 02?

A. window.name is assigned to 'hello' and the variable = remains undefined.
B. window.m Is assigned the correct object.
C. The m variable is assigned the correct object but this.name remains undefined.
D. The m variable is assigned the correct object.

Question#5

Given the code below:
Setcurrent URL ();
console.log(‘The current URL is: ‘ +url );
functionsetCurrentUrl() {
Url = window.location.href:
What happens when the code executes?

A. The url variable has local scope and line 02 throws an error.
B. The url variable has global scope and line 02 executes correctly.
C. The url variable has global scope and line 02 throws an error.
D. The url variable has local scope and line 02 executes correctly.

What This Salesforce Certified JavaScript Developer Study Resource Helps You Do

Review Key Concepts

Review the technologies, products, processes, and practical skills covered by the current Salesforce Certified JavaScript Developer exam objectives.

Practice Scenario-Based Questions

Work through independently developed questions designed to strengthen your understanding of technical scenarios and decision-making.

Identify Knowledge Gaps

Use your results and the provided explanations to find weaker areas and focus your study more effectively.

How to Use This Salesforce Certified JavaScript Developer Preparation Material

Review the Exam Scope

Start by reviewing the topics covered by the Salesforce Certified JavaScript Developer exam. Compare them with the official exam objectives to understand the required technologies, operational tasks, and practical skills, then identify the areas that deserve the most attention.

Practice Independently

Complete a focused set of practice questions for each topic. On your first attempt, avoid referring to notes, answers, or other study resources so that you can evaluate your current understanding more accurately.

Study the Explanations

Review the answers and explanations after completing each practice session. Understand why the correct option is appropriate for the given scenario and why the other options may be incorrect or less suitable.

Close Knowledge Gaps

Keep track of incorrect answers, unfamiliar concepts, and weaker knowledge areas. Review these topics using official documentation and practical experience, then answer the related questions again to reinforce your understanding and monitor your progress.

Independent Salesforce Certified JavaScript Developer Preparation Resource

CertQueen independently develops its certification study materials for educational purposes. The practice questions are not copied from, recalled from, or presented as live or official exam questions.

CertQueen is not affiliated with, endorsed by, sponsored by, or authorized by any certification provider. Certification names, exam codes, product names, and related trademarks are the property of their respective owners and are referenced only for identification and educational purposes.

Exam Code: Salesforce Certified JavaScript Developer
Q & A: 230 Q&As
Updated:  Nov 02,2026

 

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