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Topics of Salesforce JavaScript Developer I Exam

Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts Salesforce JavaScript-Developer-I exam will include the following topics:

1. Variable, Types, and Collection: 23%

Scenario based coding Variables Creation and Initialization JSON object understanding

2. Object, Functions, and Classes: 25%

Implementation of different functions Understanding of different modules of Javascript Scope of variables and their execution flow

3. Browser and Events: 17%

Handling and propagation of events Development tools of browsers Understanding of browser specific APIs

4. Asynchronous Programming: 13%

Asynchrounous programming different concepts Monitoring and management of different loops

5. Server Side Javascript: 8%

Implementation of Node.js Understanding of Node.js CLI commands

6. Testing: 7%

Unit Testing effectiveness of different tests

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

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Salesforce JavaScript-Developer-I Certification Exam covers a wide range of topics related to JavaScript development in Salesforce. These topics include but are not limited to: Apex, Visualforce, Lightning Components, Aura Components, JavaScript, and HTML/CSS. JavaScript-Developer-I exam also assesses the candidate's ability to design and implement solutions using best practices and Salesforce development standards.

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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