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To be eligible to take the Salesforce JavaScript-Developer-I certification exam, candidates must have experience in developing custom applications using JavaScript and must have a solid understanding of the Salesforce platform, including its data model, security model, and user interface. Candidates must also have completed the Salesforce Platform Developer I certification exam, which validates their knowledge of the Salesforce platform and its development tools. The JavaScript-Developer-I certification exam is an excellent way for developers to enhance their skills, demonstrate their expertise, and increase their career opportunities within the Salesforce ecosystem.
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Debugging and Error Handling | 7% | - Defensive programming practices - Error types and exception handling - Console methods and logging - Debugging tools and breakpoints |
| Topic 2: Browsers and Events | 17% | - Window and document object properties - Event handling, propagation, and delegation - Document Object Model (DOM) manipulation - Script loading and execution order - Browser APIs and Web Storage |
| Topic 3: Server-Side JavaScript | 8% | - Command-line tools and scripts - Node.js fundamentals and runtime - Core Node.js modules - Module system and require/import |
| Topic 4: Objects, Functions, and Classes | 25% | - Modules and imports/exports - Object creation, properties, and methods - Decorators and advanced function patterns - Class syntax, inheritance, and prototypes - Closures and execution context - Function definitions, parameters, and scope |
| Topic 5: Testing | 7% | - Unit testing concepts - Testing frameworks and assertions - Test doubles and mocks - Code coverage and best practices |
| Topic 6: Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Truthy and falsy values - Working with strings, numbers, dates, and booleans - JSON parsing and usage - Array methods and data manipulation - Variable declaration and initialization |
| Topic 7: Asynchronous Programming | 13% | - Async/await syntax - Promises and chaining - Callbacks and callback hell - Fetch API and HTTP requests - Event loop and micro/macro tasks |
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