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Salesforce Certified JavaScript Developer I (JS-Developer-I) Certification Exam is designed to evaluate the knowledge and skills of developers in building custom applications on the Salesforce platform using JavaScript. Salesforce Certified JavaScript Developer (JS-Dev-101) certification exam is intended for those developers who have a good understanding of JavaScript and its various frameworks and libraries. JavaScript-Developer-I exam is also useful for developers who want to enhance their skills and knowledge in building custom applications on the Salesforce platform.

Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101

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Salesforce is a cloud-based software that provides customer relationship management (CRM) and other business solutions. As a widely adopted CRM platform, Salesforce offers various certifications that enable professionals to demonstrate their skills in different areas of Salesforce. Among these certifications is the Salesforce Certified JavaScript Developer I, which focuses on JavaScript and its integration with Salesforce.

Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Objects, Functions, and Classes25%- Object creation and manipulation
- Function declarations and expressions
- Variable scope and closures
- Modules and decorators
- Prototypal inheritance
- Execution flow and context
- Higher-order functions
- Arrow functions
- ES6 classes and inheritance
Topic 2: Asynchronous Programming13%- Promises (creation, chaining, error handling)
- Event loop and execution flow
- Callbacks
- Async/Await syntax
- Asynchronous patterns for business requirements
Topic 3: Testing7%- Test effectiveness evaluation
- Test coverage and reliability
- Unit testing concepts
- Writing and modifying unit tests
Topic 4: Debugging and Error Handling7%- Custom error types
- Error handling techniques (try/catch/finally)
- Breakpoints and code inspection
- Console methods for debugging
Topic 5: Variables, Types, and Collections23%- Primitive and complex data types
- Variable declarations and initialization
- JSON parsing and manipulation
- Arrays and collections
- Truthy and falsy evaluations
- Type coercion and conversion
- Strings, numbers, and dates
Topic 6: Server Side JavaScript8%- Package management (npm)
- Core Node.js modules
- CLI commands
- Server-side JavaScript implementations
- Node.js fundamentals
Topic 7: Browser and Events17%- Browser-specific APIs
- DOM manipulation
- Interacting with forms and user input
- Event handling and listeners
- Event propagation (bubbling and capturing)
- Browser Developer Tools usage

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