PDF Version DemoAverage Salary for Salesforce JavaScript-Developer-I Exam Certified Professional
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
Today, Salesforce JavaScript-Developer-I日本語 certification exam enjoyed by many people and it can measure your ability. With the certificate of Salesforce certified engineers, you will have a better job and a better future.
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Who should take the Salesforce JavaScript-Developer-I Exam
This course is designed for Javascript developers starting on the Salesforce platform who require programming customizations on front-end and back-end. There are no prerequisites for Salesforce JavaScript Developer I Exam. Typical job roles that align to the Salesforce Certified JavaScript Developer I are as follows:
- Front end developer
- JavaScript programmer
- Technical Project Manager
- Salesforce developer
- Full stack developer
- UI/UX Engineer
- Technical Product Manager
- Software/backend developer
- Web application developer
- Support engineer
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Testing | 7% | - Test doubles and mocks - Testing frameworks and assertions - Unit testing concepts - Code coverage and best practices |
| Objects, Functions, and Classes | 25% | - Function definitions, parameters, and scope - Class syntax, inheritance, and prototypes - Closures and execution context - Decorators and advanced function patterns - Modules and imports/exports - Object creation, properties, and methods |
| Browsers and Events | 17% | - Event handling, propagation, and delegation - Script loading and execution order - Window and document object properties - Browser APIs and Web Storage - Document Object Model (DOM) manipulation |
| Asynchronous Programming | 13% | - Async/await syntax - Promises and chaining - Callbacks and callback hell - Event loop and micro/macro tasks - Fetch API and HTTP requests |
| Server-Side JavaScript | 8% | - Command-line tools and scripts - Core Node.js modules - Node.js fundamentals and runtime - Module system and require/import |
| Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Truthy and falsy values - Variable declaration and initialization - Array methods and data manipulation - JSON parsing and usage - Working with strings, numbers, dates, and booleans |
| Debugging and Error Handling | 7% | - Defensive programming practices - Debugging tools and breakpoints - Console methods and logging - Error types and exception handling |
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