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Last Updated: Jul 27, 2026
No. of Questions: 149 Questions & Answers with Testing Engine
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam
- This exam consists of 60 questions
- Passing score 65%
- There is a time limit of 105 minutes for the exam.
- This exam is offered in only English.
- The type of questions is Multiple Choice and situation-based questions.
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Asynchronous JavaScript | - Promises and async/await - Event loop and concurrency model - Error handling in async workflows |
| Browser and DOM Interaction | - Browser APIs (fetch, storage, timers) - Event handling and propagation - DOM manipulation and traversal |
| Salesforce Platform Integration | - Calling Apex methods from JavaScript - Lightning Web Components (LWC) JavaScript usage - Security considerations in Salesforce JavaScript |
| JavaScript Language Fundamentals | - Functions, scope, and closures - Data types, variables, and operators - ES6+ syntax and features |
| Testing and Debugging | - Debugging techniques and tools - Unit testing principles |
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