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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 |
|---|---|---|
| Topic 1: Asynchronous Programming | 13% | - Fetch API and HTTP requests - Event loop and micro/macro tasks - Async/await syntax - Callbacks and callback hell - Promises and chaining |
| Topic 2: Objects, Functions, and Classes | 25% | - Function definitions, parameters, and scope - Decorators and advanced function patterns - Closures and execution context - Modules and imports/exports - Class syntax, inheritance, and prototypes - Object creation, properties, and methods |
| Topic 3: Variables, Types, and Collections | 23% | - Type coercion and conversion rules - JSON parsing and usage - Truthy and falsy values - Variable declaration and initialization - Array methods and data manipulation - Working with strings, numbers, dates, and booleans |
| Topic 4: Browsers and Events | 17% | - Event handling, propagation, and delegation - Browser APIs and Web Storage - Document Object Model (DOM) manipulation - Script loading and execution order - Window and document object properties |
| Topic 5: Server-Side JavaScript | 8% | - Command-line tools and scripts - Core Node.js modules - Module system and require/import - Node.js fundamentals and runtime |
| Topic 6: Testing | 7% | - Test doubles and mocks - Testing frameworks and assertions - Unit testing concepts - Code coverage and best practices |
| Topic 7: Debugging and Error Handling | 7% | - Console methods and logging - Debugging tools and breakpoints - Defensive programming practices - Error types and exception handling |
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