JS-Dev-101
1Variables, Types, and Collections
23%
2Objects, Functions, and Classes
25%
3Browser and Events
17%
4Debugging and Error Handling
7%
5Asynchronous Programming
13%
6Server Side JavaScript
8%
7Testing
7%
Exam guide · JS-Dev-101
Salesforce JavaScript Developer exam guide
The JS-Dev-101 exam has 60 questions and takes 105 minutes. You need 65% to pass. It costs $200 (plus tax; retakes cost half, and Foundations retakes are free). Salesforce hasn’t announced a retirement date.
Last updated
The exam at a glance
Salesforce JavaScript Developer (JS-Dev-101)
- Questions
- 60
- Time
- 105 min
- Prerequisites
- None
- Level
- Intermediate
- Role
- JavaScript Developer
- Exam code
- JS-Dev-101
From Salesforce’s own pages, checked every week (last on November 8, 2026). The cost was checked on November 8, 2026. How we check our facts
Versions and dates
What’s changing, and when
Salesforce hasn’t announced a retirement date for JS-Dev-101. We check Salesforce’s site every week, and this page changes the day it does.
Exam domains
What the exam covers
Each domain’s share of the exam, as Salesforce publishes it. Spend your study time in the same proportion.
Prepare
Start on Salesforce JavaScript Developer today
Free tools to find your weak domains and plan your weeks, then full practice exams in OpenpassAI.
Free practice test
10 JS-Dev-101 questions
Original questions across the exam’s domains, each with an explanation, and your score by domain.
Take the testFree study plan
A week-by-week plan
Pick your exam date and weekly hours, and get a plan weighted like the domains above.
Make my planSalesforce certifications
Where JavaScript Developer fits
Every Salesforce certification on one map, with each exam’s facts checked weekly.
See the Salesforce page
Take it further in OpenpassAI
Full Salesforce JavaScript Developer practice exams
Timed exams weighted like the real one, an AI tutor that explains every answer, and a readiness score for each domain.
FAQs
Got Questions? We’ve Got Answers.
Find quick answers or contact our support team.
How many questions are on the Salesforce JavaScript Developer exam?
The JS-Dev-101 exam has 60 questions, and you get 105 minutes.
What is the passing score for Salesforce JavaScript Developer?
You need 65%.
How much does the Salesforce JavaScript Developer exam cost?
$200 (plus tax; retakes cost half, and Foundations retakes are free). Check Salesforce’s site for the price in your country.
When does JS-Dev-101 retire?
Salesforce hasn’t announced one yet. We check Salesforce’s site every week, and this page changes the day it does.
What experience do I need for Salesforce JavaScript Developer?
None: Salesforce sets no prerequisites for JavaScript Developer. Knowing the exam’s domains well is what counts.
How should I study for Salesforce JavaScript Developer?
Weight your time like the exam: Objects, Functions, and Classes carries the most (25%). Take the free practice test to find your weakest domains, make a study plan around them, and before you book, sit full-length timed practice exams until you pass them comfortably.
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