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