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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: Testing | 7% | - Test coverage and reliability - Unit testing concepts - Test effectiveness evaluation - Writing and modifying unit tests |
| Topic 2: Server Side JavaScript | 8% | - Core Node.js modules - Node.js fundamentals - Server-side JavaScript implementations - Package management (npm) - CLI commands |
| Topic 3: Debugging and Error Handling | 7% | - Error handling techniques (try/catch/finally) - Custom error types - Console methods for debugging - Breakpoints and code inspection |
| Topic 4: Variables, Types, and Collections | 23% | - Arrays and collections - JSON parsing and manipulation - Type coercion and conversion - Strings, numbers, and dates - Primitive and complex data types - Truthy and falsy evaluations - Variable declarations and initialization |
| Topic 5: Objects, Functions, and Classes | 25% | - ES6 classes and inheritance - Higher-order functions - Object creation and manipulation - Execution flow and context - Function declarations and expressions - Modules and decorators - Variable scope and closures - Arrow functions - Prototypal inheritance |
| Topic 6: Asynchronous Programming | 13% | - Promises (creation, chaining, error handling) - Callbacks - Event loop and execution flow - Async/Await syntax - Asynchronous patterns for business requirements |
| Topic 7: Browser and Events | 17% | - Browser Developer Tools usage - DOM manipulation - Event handling and listeners - Browser-specific APIs - Interacting with forms and user input - Event propagation (bubbling and capturing) |
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