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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Browsers and Events | 17% | - Browser APIs and Web Storage - Event handling, propagation, and delegation - Document Object Model (DOM) manipulation - Window and document object properties - Script loading and execution order |
| Topic 2: Objects, Functions, and Classes | 25% | - Decorators and advanced function patterns - Function definitions, parameters, and scope - Modules and imports/exports - Class syntax, inheritance, and prototypes - Object creation, properties, and methods - Closures and execution context |
| Topic 3: Asynchronous Programming | 13% | - Callbacks and callback hell - Fetch API and HTTP requests - Promises and chaining - Async/await syntax - Event loop and micro/macro tasks |
| Topic 4: Debugging and Error Handling | 7% | - Console methods and logging - Defensive programming practices - Debugging tools and breakpoints - Error types and exception handling |
| Topic 5: Server-Side JavaScript | 8% | - Command-line tools and scripts - Node.js fundamentals and runtime - Module system and require/import - Core Node.js modules |
| Topic 6: Variables, Types, and Collections | 23% | - Working with strings, numbers, dates, and booleans - Variable declaration and initialization - Array methods and data manipulation - Type coercion and conversion rules - JSON parsing and usage - Truthy and falsy values |
| Topic 7: Testing | 7% | - Code coverage and best practices - Unit testing concepts - Testing frameworks and assertions - Test doubles and mocks |
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