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Salesforce Certified JavaScript Developer Exam Guide

Contents

About the Salesforce Certified JavaScript Developer Certification
Audience Description: Salesforce Certified JavaScript Developer
Purpose of This Exam Guide
About the Exam
Exam Outline
Recommended Training and Resources
Salesforce Certification Candidate Code of Conduct
Maintaining Your Salesforce Certification

 

About the Salesforce Certified JavaScript Developer Exam

The Salesforce Certified JavaScript Developer Exam is intended for individuals who have knowledge, skills, and experience developing front-end and/or back-end JavaScript applications for the web stack. This certification validates core JavaScript skills of candidates who need to work with JavaScript related technologies. These skills can be applied to any framework, such as the Lightning Component framework, and are not mobile or device specific.

 

Audience Description: Salesforce Certified JavaScript Developer

The Salesforce Certified JavaScript Developer Exam candidate uses the JavaScript language in one or more frameworks to develop front-end and/or back-end applications. The candidate can design, develop, and test solutions that are performant, maintainable, and re-usable.

The candidate can use JavaScript-specific design patterns for programming, and can combine JavaScript with CSS, HTML, and other markup languages.

Every JavaScript developer can easily build on Salesforce with Lightning Web Components (LWC). For the millions of JavaScript developers worldwide, this means they can code on Salesforce without having to learn anything new. Developers can use the existing portfolio of developer services in the Lightning Platform and the modern JavaScript language to build and deploy blazing-fast apps on Salesforce.

The Salesforce Certified JavaScript Developer certification is an industry-standard certification in the JavaScript ecosystem. This certification is intended for individuals who have 1-2 years of knowledge, skills, and experience developing front-end and/or back-end JavaScript applications for the web stack. This exam validates core JavaScript development skills of candidates who need to work with JavaScript related technologies.

Candidates who pass the Salesforce Certified JavaScript Developer Exam demonstrate that they have the standard JavaScript fundamentals. Developers can also use these JavaScript coding skills to develop Lightning web components.

Candidates typically have experience with the following JavaScript topics.

  • Data types and operators
  • Variables and variable scope
  • String manipulation
  • Type coercion and conversion (implicit and explicit)
  • Functions (plus higher order functions)
  • Data Structures: Objects & Arrays
  • Inheritance
  • Classes
  • Modules
  • Document Object Model (DOM)
  • Events
  • Error Handling
  • Debugging
  • Testing (Platform agnostic)
  • Asynchronous Programming
  • Server-side JavaScript


The Salesforce Certified JavaScript Developer is intended for Salesforce partners, customers, and employees who work with JavaScript.

Typical job roles that align to the Salesforce Certified JavaScript Developer include:

  • JavaScript programmer
  • Salesforce Developer
  • Full stack developer
  • Web application developer
  • Front end developer
  • Software/backend developer
  • Support engineer
  • Technical product/project manager
  • UI/UX engineer

 

Purpose of This Exam Guide

This exam guide is designed to help you prepare for the Salesforce Certified JavaScript Developer Exam. This guide provides information about the target audience, the recommended training and documentation, and a complete list of exam objectives. Salesforce highly recommends a combination of on-the-job experience and self-study to maximize your chances of passing the exam.

 

About the Exam

Here are details about the Salesforce Certified JavaScript Developer Exam.

  • Content: 60 multiple-choice/multiple-select questions and up to five unscored questions
  • Time allotted to complete the exam: 105 minutes
  • Passing score: 65%
  • Version: Exam questions align to the Summer '22 release
  • Registration fee: US$200, JPY 30,000, plus applicable taxes as required per local law
    Retake fee: US$100, JPY 30,000, plus applicable taxes as required per local law
  • Delivery options: Proctored exam delivered onsite at a testing center or in an online environment; find more information on scheduling an exam here.
  • References: No hard-copy or online materials may be referenced during the exam.
  • Prerequisite: None

This exam may contain up to five additional unscored questions to gather performance data. Unscored questions are randomly integrated and have no impact on your final exam result.

 

Exam Outline

The Salesforce Certified JavaScript Developer Exam measures a candidate’s knowledge and skills related to the following sections and objectives.

Variables, Types, and Collections: 23%
  • Given a scenario, write code to create variables and initialize them correctly.
  • Given a business requirement, utilize strings, numbers, and dates effectively.
  • Given a scenario or example, demonstrate awareness of type coercion and its effects.
  • Given a specific scenario, distinguish truthy or falsey evaluations.
  • Given a list of data, demonstrate data manipulation with arrays.
  • Given a JSON response, demonstrate how to operate the JSON object.

Objects, Functions, and Classes: 25%
  • Given a business requirement, locate the best function implementation.
  • Given a business requirement, apply fundamentals of object implementation to solve the business requirement.
  • Given a business requirement, apply fundamentals of class implementation to solve the business requirement.
  • Given a JavaScript module, give examples of how to use the module.
  • Given a JavaScript decorator, give examples of how to use the decorator.
  • Given a block of code, analyze the variable scope and the execution flow.

Browser and Events: 17%
  • Given a business requirement, utilize Events, event handlers, and propagation.
  • Given a business requirement, evaluate and manipulate the DOM.
  • Given a scenario, utilize the Browser Dev Tools to investigate code behavior. 
  • Given a scenario and requirements, utilize browser specific APIs.

Debugging and Error Handling: 7%
  • Given a scenario, handle errors properly.
  • Given code to be debugged, use the console and breakpoints.

Asynchronous Programming: 13%
  • Given a scenario, apply asynchronous programming concepts.
  • Given a scenario, use event loop and event monitor or determine loop outcomes.

Server Side JavaScript: 8%
  • Given a scenario and requirements, infer which Node.js implementation is a good solution.
  • Given a scenario and requirements, infer which Node.js CLI command is a good solution.
  • Know the core Node.js modules and given requirements, infer which Node.js library/framework is a good solution.
  • Given a scenario and requirements, distinguish which Node.Js Package Management solution is the most fitting.

Testing: 7%
  • With a block of code and the associated Unit Test, determine where the test is ineffective and modify it to make it more effective.

 

Recommended Training and Resources

As preparation for this exam, we recommend a combination of hands-on experience, training course completion, Trailhead Trails, and self-study in the areas listed in the Exam Outline section of this exam guide.

The self-study materials recommended for this exam include:

Additional resources:

To review online documentation, tip sheets, and user guides, search for the topics listed in the Exam Outline section of this guide on Salesforce Help and study the information related to those topics. 

 

Salesforce Certification Candidate Code of Conduct

At Salesforce, Trust is our #1 value. Protecting the security of Salesforce Certifications is up to all of us. As a participant in the Salesforce Certification Program, you’re required to review and accept the terms of the Salesforce Certification Program Agreement and Code of Conduct at the beginning of each exam.

 

Maintaining Your Salesforce Certification

One of the benefits of holding a Salesforce Certification is always being up to date on new product releases. You'll be required to complete the Salesforce Certified JavaScript Developer certification maintenance badge on Trailhead once a year.

Don’t let your hard-earned certification expire! If you don't complete all maintenance requirements by the due date, your certification will expire. 

Bookmark these useful resources for maintaining your certifications.

 
 
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