Salesforce JS-Dev-101 Exam Details & Actual Exam Questions
- Exam Code/Number: JS-Dev-101
- Exam Name/Title: Salesforce Certified JavaScript Developer - Multiple Choice
- Certification Provider: Salesforce
- Corresponding Certification: Salesforce Developers
- Exam Questions: 149
- Updated On: Aug,31 2026
- Certification Level: Elementary
Salesforce Certified JavaScript Developer - Multiple Choice Exam Questions
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(32 Up Votes)Salesforce JS-Dev-101 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-101 |
| Certificate Validity Period: | Lifetime (No renewal required) |
| Passing Score: | 65% |
| Real Exam Qty: | 60 (plus up to 5 unscored pilot questions) |
| Exam Format: | Multiple Select, Multiple Choice |
| Available Languages: | English |
| Exam Duration: | 105 minutes |
| Related Certifications: | Lightning Web Components Specialist Superbadge Salesforce Certified JavaScript Developer I |
| Exam Price: | $200 USD |
| Sample Questions: | Salesforce JS-Dev-101 Sample Questions |
| Exam Way: | Online (Proctored) |
| Pre Condition: | Completion of the Lightning Web Components Specialist Superbadge is required to earn the full credential, though it can be completed before or after the exam. |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi |
Salesforce JS-Dev-101 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Asynchronous Programming | 13% | - Promises and async/await - Event loop and asynchronous code execution - Callback patterns |
| Browser and Events | 17% | - Event handling, propagation, bubbling, and capturing - Browser Developer Tools - DOM manipulation |
| Objects, Functions, and Classes | 25% | - Function declarations, expressions, and arrow functions - ES6 Classes, constructors, methods, and inheritance - Higher-order functions and closures - Object creation, properties, and prototypal inheritance - JavaScript modules (export, import) |
| Debugging and Error Handling | 7% | - Logging strategies and debugging techniques - try-catch blocks |
| Variables, Types, and Collections | 23% | - String manipulation and Date objects - Type coercion and type conversion - JSON parsing and stringification - Array manipulation (map, filter, reduce, forEach, find) - Variable declaration (var, let, const, scoping, hoisting) |
| Server Side JavaScript | 8% | - Modules and file operations - Salesforce API integration - Node.js applications |
| Testing | 7% | - Test-driven development principles - Unit testing with Jest - Automated testing strategies |
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