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Last Updated: Aug 08, 2026
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Server-Side JavaScript | 8% | - Module system and require/import - Node.js fundamentals and runtime - Core Node.js modules - Command-line tools and scripts |
| Asynchronous Programming | 13% | - Event loop and micro/macro tasks - Callbacks and callback hell - Fetch API and HTTP requests - Async/await syntax - Promises and chaining |
| Browsers and Events | 17% | - Window and document object properties - Script loading and execution order - Event handling, propagation, and delegation - Document Object Model (DOM) manipulation - Browser APIs and Web Storage |
| Variables, Types, and Collections | 23% | - Truthy and falsy values - Array methods and data manipulation - JSON parsing and usage - Working with strings, numbers, dates, and booleans - Type coercion and conversion rules - Variable declaration and initialization |
| Debugging and Error Handling | 7% | - Console methods and logging - Debugging tools and breakpoints - Error types and exception handling - Defensive programming practices |
| Objects, Functions, and Classes | 25% | - Function definitions, parameters, and scope - Object creation, properties, and methods - Class syntax, inheritance, and prototypes - Closures and execution context - Modules and imports/exports - Decorators and advanced function patterns |
| Testing | 7% | - Unit testing concepts - Test doubles and mocks - Testing frameworks and assertions - Code coverage and best practices |
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