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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:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Variables, Types, and Collections | 23% | - 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 Programming | 13% | - Asynchronous patterns for business requirements - Callbacks - Promises (creation, chaining, error handling) - Async/Await syntax - Event loop and execution flow |
| Topic 3: Testing | 7% | - Unit testing concepts - Writing and modifying unit tests - Test effectiveness evaluation - Test coverage and reliability |
| Topic 4: Server Side JavaScript | 8% | - Node.js fundamentals - Package management (npm) - Core Node.js modules - Server-side JavaScript implementations - CLI commands |
| Topic 5: Debugging and Error Handling | 7% | - Console methods for debugging - Custom error types - Error handling techniques (try/catch/finally) - Breakpoints and code inspection |
| Topic 6: Objects, Functions, and Classes | 25% | - 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 Events | 17% | - 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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