Javascript Developer Study Guide
Every topic objective in the Javascript Developer I exam explained thoroughly. Topic summaries and sample scenarios to work through. The most efficient way to study the key concepts in the exam.
Last Updated: May 2026
The overview
This is the starting point for your study, covering all of the exam guide objectives.
The Javascript Developer Study Guide incorporates all 25 Objectives within all 7 Sections of the official Salesforce Javascript Certification Exam Guide.
What's included?
- Covers all 7 Sections of the official Salesforce Certification Exam Guide
- Explains in detail all objectives within each section (a total of 25 objectives)
- Topic summaries that you can use to learn the topics efficiently
- Topic videos for selected topics by Guest Instructors explaining topics in detail
- Explanations in plain English, with screenshots and diagrams rather than endless, unremarkable text
- Easy to read bullet points
- Dynamic Code Exercises (for a realistic, hands-on coding experience)
- Easy to read bullet points
- Includes links to lots of extra resources for further reading
- Scenarios and requirements with sample answers to test your ability to determine solutions
- Unlimited Access and Updates for 12 months
Everything you need to prepare for Salesforce Javascript Developer Certification
In order to pass the Salesforce Javascript Developer certification, you’ll find that knowledge and experience of the Salesforce platform aren’t enough. You also need to get to grips with the exam itself.
That’s why we created the Javascript Developer Study Guide.
Our study guide will help you understand confusing or difficult concepts from the official Salesforce Javascript Developer Certification Exam Guide and brush up on your skills – all in a format that’s easy to digest and has been proven to work with thousands of happy customers.
The Javascript Developer Study Guide will help you focus on the key points you need to know to pass the exam.
The Salesforce help pages and videos are great when you want to know all the details, but the Javascript Developer Study Guide provides a summary of all topics in study guide format.
Why this guide is important?
You need a guide that summarises the key certification objectives in plain English, using examples, diagrams, charts and topic reviews to make sure you’ve cemented your understanding.
The Javascript Developer Certification Study Guide includes screenshots, summary points and diagrams to illustrate key concepts, as well as visually explain and demonstrate Salesforce functionality.
Course content
9 sectionsVariables, Types, and Collections I 4 topics
- 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.
- Knowledge Check
Variables, Types, and Collections II 4 topics
- 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.
- Knowledge Check
Objects, Functions, and Classes I 4 topics
- 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.
- Knowledge Check
Objects, Functions, and Classes II 4 topics
- 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.
- Knowledge Check
Browser and Events 5 topics
- 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.
- Knowledge Check
Debugging and Error Handling 3 topics
- Given a scenario, handle errors properly.
- Given code to be debugged, use the console and breakpoints.
- Knowledge Check
Asynchronous Programming 3 topics
- Given a scenario, apply asynchronous programming concepts.
- Given a scenario, use event loop and event monitor or determine loop outcomes.
- Knowledge Check
Server Side JavaScript 5 topics
- 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.
- Knowledge Check
Testing 2 topics
- With a block of code and the associated Unit Test, determine where the test is ineffective and modify it to make it more effective.
- Knowledge Check
Take the tour
What our students say
Gain essential and valuable skills from a recognized leader in Salesforce to future-proof your career and stand out to leading employers.
Why choose us?
Gain essential and valuable skills from a recognized leader in Salesforce to future-proof your career and stand out to leading employers.
Frequently asked questions
Everything you need to know before buying our study guide
What release are the study guides based on?
The study guides are updated shortly after each release. You will get any release updates for free during the 1 year of access after purchase.
Is there a limit for access to the study guides?
You will have unlimited access to this study guide for 12 months from your date of purchase. Plus, any updates or release changes made to the material during your year of access are included.
What is included in a K2 University Study Guide?
Study guides cover all sections of the official Salesforce Certification Exam Guide, explaining all objectives in detail with topic summaries, explanations in plain English, screenshots, diagrams, easy-to-read bullet points, links to extra resources for further reading, and scenarios with sample answers.
Popular Salesforce Courses
Discover courses tailored to your learning journey.
