Description
What you'll learn
This course includes
Course content
Chapter 1 - Variables, Types, and Collections
Chapter 2 - Objects, Functions, and Classes
Chapter 3 - Browser and Events
Chapter 4 - Debugging and Error Handling
Chapter 5 - Asynchronous Programming
Chapter 6 - Server Side JavaScript
Chapter 7 - Testing
Final Exam Simulators
What our students say
“The questions pushed me to think through JavaScript behavior instead of just memorizing syntax. The explanations were especially useful for functions, objects, async programming, and browser events. It gave me a much clearer idea of which topics I needed to revisit before the exam.”
Darius Whitmore
✓ Verified Review
“I liked that the practice felt focused on the actual JavaScript skills behind the certification. Some questions caught mistakes I was making with scope, promises, and classes, and the explanations helped me understand why. I used the practice several times alongside Trailhead and my own coding exercises.”
Elena Marovic
✓ Verified Review
“This was a useful final-stage study resource for the Salesforce JavaScript Developer exam. The mix of debugging, asynchronous JavaScript, testing, and object-oriented concepts made the practice feel well balanced. Being able to repeat the questions helped me focus on the areas where I was still inconsistent.”
Jonas Everly
✓ Verified Review
About the Salesforce Certified JavaScript Developer Exam Details
Certification
Salesforce Certified JavaScript Developer
Exam code
JS-Dev-101
Role
Developer
Level
Intermediate
Question format
60 multiple-choice and multiple-select questions
Additional questions
Up to 5 unscored questions
Exam duration
105 minutes
Passing score
65%
Registration fee
US$200 or JPY ¥30,000, plus applicable taxes required by local law
Retake fee
US$100 or JPY ¥30,000, plus applicable taxes required by local law
Delivery
Proctored exam delivered onsite at a testing center or in an online environment
Reference materials
Hard-copy and online reference materials are not permitted
Prerequisite
None
Languages
English and Japanese
Frequently Asked Questions
What is included in the Salesforce Certified JavaScript Developer Practice Exams?
The Salesforce Certified JavaScript Developer Practice Exams include online exam-style practice, detailed answer explanations, domain-focused preparation, mixed-question practice, progress tracking, unlimited retakes, and lifetime access. The independently written Salesforce Certified JavaScript Developer practice questions are intended to help you apply JavaScript concepts, identify weaker areas, and become more comfortable reasoning through scenarios based on the published certification objectives.
What certification exam do these practice exams prepare me for?
These practice exams prepare you for the Salesforce Certified JavaScript Developer certification exam. Salesforce describes the credential as validating JavaScript skills relevant to developers working with front-end or back-end applications and JavaScript-related Salesforce technologies such as Lightning Web Components. Typical aligned roles include JavaScript programmers, Salesforce developers, full-stack developers, front-end developers, and web application developers.
What is the current Salesforce Certified JavaScript Developer exam code?
The current Trailhead Academy certification page identifies the Salesforce Certified JavaScript Developer exam as JS-Dev-101. When searching for registration information or Salesforce Certified JavaScript Developer exam preparation resources, you may therefore see references to the JS-Dev-101 exam or JS-Dev-101 practice exam. Candidates should always confirm the exam listing in Trailhead Academy when they are ready to register.
What topics are covered on the Salesforce Certified JavaScript Developer exam?
Salesforce currently publishes seven weighted areas: Variables, Types, and Collections at 23%; Objects, Functions, and Classes at 25%; Browsers and Events at 17%; Debugging and Error Handling at 7%; Asynchronous Programming at 13%; Server-Side JavaScript at 8%; and Testing at 7%. These areas test practical JavaScript programming, browser behavior, asynchronous execution, Node.js concepts, debugging, and testing.
Do the practice questions cover the complete published Salesforce JavaScript Developer exam outline?
Yes. The Salesforce Certified JavaScript Developer practice questions are structured around the currently published exam objectives, including variables and collections, objects and functions, browser events, asynchronous programming, debugging, server-side JavaScript, and testing. The purpose is to provide domain-focused and mixed exam-style practice across the published scope rather than concentrate only on the highest-weighted sections.
Are these official Salesforce Certified JavaScript Developer exam questions?
No. ForceDigest does not provide official, live, leaked, recalled, copied, or otherwise restricted Salesforce certification exam questions. All Salesforce Certified JavaScript Developer practice questions are independently written for educational and certification-preparation purposes. The goal is to help you practice JavaScript concepts, application scenarios, and certification-style reasoning without reproducing protected exam content.
Are detailed answer explanations included?
Yes. Detailed answer explanations are included with the Salesforce Certified JavaScript Developer practice material. They are intended to help you understand why an answer is appropriate and recognize the concepts that should guide your decision. Rather than simply memorizing an answer, use the explanations to review JavaScript behavior, programming patterns, browser concepts, asynchronous execution, testing principles, and other areas represented in the JS-Dev-101 objectives.
Can I retake the Salesforce Certified JavaScript Developer practice exams?
Yes. Unlimited retakes are included, allowing you to repeat the practice material as often as needed during your access period. Retaking questions is particularly useful after reviewing a weak exam domain because you can determine whether you now understand the underlying JavaScript concept rather than merely remembering your first result. You can also return after additional study and repeat the material again.
How long will I have access to the practice exams?
Your purchase includes lifetime access to the practice exams, allowing you to return to the material whenever you want through your ForceDigest account. This makes it possible to spread your Salesforce Certified JavaScript Developer exam preparation over a longer period, revisit difficult JavaScript topics before scheduling JS-Dev-101, or return to the material after additional hands-on development practice.
How do I access the practice exams after purchasing?
After completing your purchase, sign in to your ForceDigest account and open your learning dashboard. Your purchased practice exams will be available from your account after the order has been successfully processed. Because access is provided online, you can return to the Salesforce Certified JavaScript Developer practice material through your account without needing to install a separate desktop application.
Can I use the Salesforce JavaScript Developer practice exams on a phone or tablet?
Yes. The practice material can be accessed through a supported web browser on desktop computers, laptops, tablets, and mobile devices. A larger screen may be more comfortable for questions that contain JavaScript code or longer scenarios, but mobile access can be useful for reviewing explanations, repeating questions, or completing shorter study sessions when you are away from your primary computer.
Who should use these Salesforce Certified JavaScript Developer practice exams?
These practice exams are suitable for JavaScript programmers, Salesforce developers, full-stack developers, front-end developers, web developers, back-end developers, and other technical professionals preparing for the Salesforce Certified JavaScript Developer credential. Salesforce states that the exam is aimed at people developing front-end or back-end JavaScript applications for the web stack and working with JavaScript-related technologies such as Lightning Web Components.
Is Salesforce Certified JavaScript Developer suitable for beginners?
It is generally better suited to candidates who already have practical JavaScript experience than to someone learning programming for the first time. Salesforce expects candidates to understand how to design, develop, and test maintainable JavaScript applications and recommends meaningful front-end or back-end JavaScript experience. Beginners can work toward the certification, but they should build JavaScript fundamentals and hands-on coding skills before relying heavily on exam-style practice.
What experience does Salesforce recommend for the JavaScript Developer certification?
Salesforce states that this certification is intended for individuals with approximately one to two years of knowledge, skills, and experience developing front-end and/or back-end JavaScript applications for the web stack. Salesforce also recommends combining practical experience with training, Trailhead learning, and self-study. Practice questions are most useful when they reinforce real JavaScript understanding rather than replace hands-on development experience.
How many questions are on the JS-Dev-101 exam, how long is it, and what is the passing score?
Salesforce currently lists 60 multiple-choice or multiple-select scored questions, with up to five additional unscored questions. The published testing time is 105 minutes, and the passing score is 65%. Because Salesforce can revise certification policies and exam details, candidates should verify these figures in the current official exam guide before registering for JS-Dev-101.
How much does the Salesforce Certified JavaScript Developer exam cost?
Salesforce currently lists the registration fee at US$200, plus applicable taxes, with separate regional pricing such as Japanese yen where applicable. A retake is charged separately under Salesforce’s current certification pricing. These are official certification fees paid through Salesforce’s exam-registration process and are completely separate from purchasing Salesforce Certified JavaScript Developer practice exams from ForceDigest.
Does Salesforce Certified JavaScript Developer have any prerequisites?
No. Salesforce currently lists no prerequisite certification for the Salesforce Certified JavaScript Developer credential. Candidates may remember earlier requirements involving the Lightning Web Components Specialist superbadge, but Salesforce retired that superbadge for certification purposes in October 2025. For current candidates, the official prerequisites information lists Salesforce Certified JavaScript Developer as having no prerequisite.
Is Salesforce Certified JavaScript Developer the same credential previously called JavaScript Developer I?
Salesforce currently uses Salesforce Certified JavaScript Developer as the credential name. However, candidates may still encounter “JavaScript Developer I” wording in official Trailhead learning resources, including existing certification-preparation modules. When preparing or registering today, use the current Salesforce Certified JavaScript Developer name and current exam guide as your primary references while recognizing that older official learning-resource titles may retain the previous wording.
How should I use the JS-Dev-101 practice exam to prepare effectively?
Start by completing mixed practice to identify which exam domains need the most attention. Review every explanation, including questions you answered correctly, and then return to JavaScript coding exercises or official learning material for weaker concepts. After studying, repeat the relevant practice questions and compare your understanding. Give particular attention to heavily weighted areas such as Objects, Functions, and Classes and Variables, Types, and Collections.
Should I use these practice exams with Salesforce Trailhead and official study resources?
Yes. Practice exams work best as one part of a broader Salesforce Certified JavaScript Developer exam preparation strategy. Salesforce provides official Trailhead certification-preparation content covering the exam topics, including interactive study activities and dedicated modules for variables, functions, browsers, asynchronous programming, server-side JavaScript, debugging, error handling, and testing. Combine those resources with hands-on JavaScript coding and practice questions rather than using any single resource in isolation.
Is the official Salesforce certification exam fee or an exam voucher included?
No. The ForceDigest product price covers access to the certification-preparation resource only. Official Salesforce exam registration, vouchers, retakes, taxes, and related certification fees are separate unless explicitly stated otherwise. Purchasing the Salesforce Certified JavaScript Developer Practice Exams does not register you for JS-Dev-101; certification registration must be completed separately through Salesforce’s current official certification process.
Does completing the Salesforce Certified JavaScript Developer practice exams guarantee that I will pass?
No. Practice exams can help you identify knowledge gaps, review published objectives, strengthen JavaScript reasoning, and become more familiar with certification-style scenarios, but they cannot guarantee an official exam result. Performance on JS-Dev-101 depends on factors such as your JavaScript knowledge, hands-on experience, preparation quality, understanding of the objectives, and performance during the official Salesforce certification exam.
What should I do if I keep getting questions wrong in one exam domain?
Are the practice questions updated, and how can I report a question that may need correction?
Is ForceDigest affiliated with Salesforce?
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