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Salesforce JavaScript Developer roles are in great demand nowadays. The average salaries of Salesforce JavaScript Developer I exam Certified professional in:
- Europe - 63,500 Euro
- England - 60,200 POUND
- United State - 129,630 USD
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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- UI/UX Engineer
- JavaScript programmer
- Technical Project Manager
- Support engineer
- Salesforce developer
- Technical Product Manager
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Salesforce JavaScript-Developer-I Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Variables, Types, and Collections | 23% | - JSON parsing and usage - Truthy and falsy values - Type coercion and conversion rules - Array methods and data manipulation - Working with strings, numbers, dates, and booleans - Variable declaration and initialization |
| Topic 2: Browsers and Events | 17% | - Window and document object properties - Browser APIs and Web Storage - Script loading and execution order - Document Object Model (DOM) manipulation - Event handling, propagation, and delegation |
| Topic 3: Debugging and Error Handling | 7% | - Defensive programming practices - Console methods and logging - Error types and exception handling - Debugging tools and breakpoints |
| Topic 4: Testing | 7% | - Code coverage and best practices - Test doubles and mocks - Unit testing concepts - Testing frameworks and assertions |
| Topic 5: Objects, Functions, and Classes | 25% | - Closures and execution context - Decorators and advanced function patterns - Class syntax, inheritance, and prototypes - Function definitions, parameters, and scope - Modules and imports/exports - Object creation, properties, and methods |
| Topic 6: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Command-line tools and scripts - Module system and require/import - Core Node.js modules |
| Topic 7: Asynchronous Programming | 13% | - Fetch API and HTTP requests - Callbacks and callback hell - Async/await syntax - Promises and chaining - Event loop and micro/macro tasks |
