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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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| Section | Weight | Objectives |
|---|---|---|
| Debugging and Error Handling | 7% | - Error handling techniques (try/catch/finally) - Custom error types - Breakpoints and code inspection - Console methods for debugging |
| Asynchronous Programming | 13% | - Promises (creation, chaining, error handling) - Event loop and execution flow - Async/Await syntax - Callbacks - Asynchronous patterns for business requirements |
| Testing | 7% | - Test effectiveness evaluation - Unit testing concepts - Writing and modifying unit tests - Test coverage and reliability |
| Objects, Functions, and Classes | 25% | - Variable scope and closures - Function declarations and expressions - Object creation and manipulation - Arrow functions - ES6 classes and inheritance - Execution flow and context - Modules and decorators - Prototypal inheritance - Higher-order functions |
| Browser and Events | 17% | - Event handling and listeners - Browser-specific APIs - Event propagation (bubbling and capturing) - Interacting with forms and user input - Browser Developer Tools usage - DOM manipulation |
| Server Side JavaScript | 8% | - Package management (npm) - Server-side JavaScript implementations - Node.js fundamentals - Core Node.js modules - CLI commands |
| Variables, Types, and Collections | 23% | - JSON parsing and manipulation - Type coercion and conversion - Arrays and collections - Truthy and falsy evaluations - Variable declarations and initialization - Strings, numbers, and dates - Primitive and complex data types |
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