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Salesforce Certified JavaScript Developer JS-Dev-101 Exam Questions

Are you looking to advance your career as a JavaScript Developer? Dive into the official syllabus, engaging discussions, expected exam format, and sample questions for the Salesforce Certified JavaScript Developer exam (JS-Dev-101) on our platform. Whether you are aspiring to showcase your expertise in JavaScript development or aiming to validate your skills, our resources are tailored to guide you through the certification process seamlessly. Access practice exams to familiarize yourself with the exam structure and boost your confidence. Get ready to excel in the Salesforce JS-Dev-101 exam and take a significant step towards your professional growth. Let's start preparing together!

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4.9/5 Exam Rating | Updated 29 Aug, 2026 | 7 Exam Domains | Verified by Amie Perigo Salesforce JS-Dev-101 Certified Professional

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Build Your Career Foundation

Build Your Career Foundation with Salesforce Developer Certification

The Salesforce Certified JavaScript Developer certification is a great choice for professionals who want to improve their skills in the JS-Dev-101 exam. This Salesforce Developer certification checks both your knowledge and your practical skills. It helps you understand the main concepts and shows that you can use Front-end and/or back-end JavaScript applications development tools, systems, and processes in real work situations.

The Salesforce JS-Dev-101 exam shows employers that you have the skills needed to work with Front-end and/or back-end JavaScript applications development confidently. It can help you stand out when applying for jobs, support your career growth, and increase your professional skill. The Salesforce Developer certification also keeps you up to date with the latest tools, technologies, and best practices from Salesforce, helping you stay ready for today's changing IT industry.

Why Become Salesforce Developer Certified?

Gain Industry Recognition

Show employers and clients that your knowledge meets Salesforce JS-Dev-101 certification standards and reflects your commitment to continuous learning and professional growth.

Apply Knowledge Professionally

The skills measured in Salesforce Certified JavaScript Developer certification are designed for practical use, helping you solve real business challenges and work more effectively in your job role.

Build In-Demand Skills

Learn the concepts and technologies covered in the Salesforce Developer certification so you can handle everyday technical tasks with confidence.

Grow Your Career

A Salesforce JS-Dev-101 certification helps you learn valuable skills that can lead to better jobs and career growth.

Salesforce JS-Dev-101 Exam Domains & Weightage

1.0 Variables, Types, and Collections 23%
2.0 Objects, Functions, and Classes 25%
3.0 Browser and Events 17%
4.0 Debugging and Error Handling 7%
5.0 Asynchronous Programming 13%
6.0 Server Side JavaScript 8%
7.0 Testing 7%

Salesforce JS-Dev-101 Exam Details (Official)

Vendor Salesforce
Exam Code JS-Dev-101
Exam Name Salesforce Certified JavaScript Developer
Certification Salesforce Developer

Salesforce Certified JavaScript Developer Exam Objectives

  1. 1

    1.0 Variables, Types, and Collections (23%)

    • 1.1Given a scenario, write code to create variables and initialize them correctly.
    • 1.2Given a business requirement, utilize strings, numbers, and dates effectively.
    • 1.3Given a scenario or example, demonstrate awareness of type coercion and its effects.
    • 1.4Given a specific scenario, distinguish truthy or falsey evaluations.
    • 1.5Given a list of data, demonstrate data manipulation with arrays.
    • 1.6Given a JSON response, demonstrate how to operate the JSON object.
  2. 2

    2.0 Objects, Functions, and Classes (25%)

    • 2.1Given a business requirement, locate the best function implementation.
    • 2.2Given a business requirement, apply fundamentals of object implementation to solve the business requirement.
    • 2.3Given a business requirement, apply fundamentals of class implementation to solve the business requirement.
    • 2.4Given a JavaScript module, give examples of how to use the module.
    • 2.5Given a JavaScript decorator, give examples of how to use the decorator.
    • 2.6Given a block of code, analyze the variable scope and the execution flow.
  3. 3

    3.0 Browser and Events (17%)

    • 3.1Given a business requirement, utilize Events, event handlers, and propagation.
    • 3.2Given a business requirement, evaluate and manipulate the DOM.
    • 3.3Given a scenario, utilize the Browser Dev Tools to investigate code behavior.
    • 3.4Given a scenario and requirements, utilize browser specific APIs.
  4. 4

    4.0 Debugging and Error Handling (7%)

    • 4.1Given a scenario, handle errors properly.
    • 4.2Given code to be debugged, use the console and breakpoints.
  5. 5

    5.0 Asynchronous Programming (13%)

    • 5.1Given a scenario, apply asynchronous programming concepts.
    • 5.2Given a scenario, use event loop and event monitor or determine loop outcomes.
  6. 6

    6.0 Server Side JavaScript (8%)

    • 6.1Given a scenario and requirements, infer which Node.js implementation is a good solution.
    • 6.2Given a scenario and requirements, infer which Node.js CLI command is a good solution.
    • 6.3Know the core Node.js modules and given requirements, infer which Node.js library/framework is a good solution.
    • 6.4Given a scenario and requirements, distinguish which Node.Js Package Management solution is the most fitting.
  7. 7

    7.0 Testing (7%)

    • 7.1With a block of code and the associated Unit Test, determine where the test is ineffective and modify it to make it more effective.

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Updated: 29 Aug, 2026 Number of Practice Questions: 147
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