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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
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Debugging and Error Handling | 7% | - Debugging tools and breakpoints - Defensive programming practices - Error types and exception handling - Console methods and logging |
| Variables, Types, and Collections | 23% | - Variable declaration and initialization - JSON parsing and usage - Working with strings, numbers, dates, and booleans - Truthy and falsy values - Type coercion and conversion rules - Array methods and data manipulation |
| Server-Side JavaScript | 8% | - Command-line tools and scripts - Core Node.js modules - Node.js fundamentals and runtime - Module system and require/import |
| Browsers and Events | 17% | - Document Object Model (DOM) manipulation - Browser APIs and Web Storage - Script loading and execution order - Event handling, propagation, and delegation - Window and document object properties |
| Objects, Functions, and Classes | 25% | - Object creation, properties, and methods - Function definitions, parameters, and scope - Decorators and advanced function patterns - Class syntax, inheritance, and prototypes - Modules and imports/exports - Closures and execution context |
| Testing | 7% | - Testing frameworks and assertions - Unit testing concepts - Test doubles and mocks - Code coverage and best practices |
| Asynchronous Programming | 13% | - Callbacks and callback hell - Promises and chaining - Async/await syntax - Event loop and micro/macro tasks - Fetch API and HTTP requests |
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