Salesforce JavaScript-Developer-I日本語 : Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)

JavaScript-Developer-I日本語 real exams

Exam Code: JavaScript-Developer-I-JPN

Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)

Updated: Aug 04, 2026

Q & A: 149 Questions and Answers

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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
  • Technical Product Manager
  • UI/UX Engineer
  • Support engineer
  • Technical Project Manager
  • Software/backend developer
  • Salesforce developer
  • JavaScript programmer
  • Full stack developer
  • Web application developer

Average 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:

  • United State - 129,630 USD
  • Europe - 63,500 Euro
  • England - 60,200 POUND

Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101

For more info read reference:

Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources

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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Testing7%- Test doubles and mocks
- Testing frameworks and assertions
- Code coverage and best practices
- Unit testing concepts
Topic 2: Server-Side JavaScript8%- Node.js fundamentals and runtime
- Module system and require/import
- Core Node.js modules
- Command-line tools and scripts
Topic 3: Asynchronous Programming13%- Async/await syntax
- Event loop and micro/macro tasks
- Fetch API and HTTP requests
- Promises and chaining
- Callbacks and callback hell
Topic 4: Objects, Functions, and Classes25%- Closures and execution context
- Decorators and advanced function patterns
- Function definitions, parameters, and scope
- Object creation, properties, and methods
- Class syntax, inheritance, and prototypes
- Modules and imports/exports
Topic 5: Variables, Types, and Collections23%- Type coercion and conversion rules
- Variable declaration and initialization
- Working with strings, numbers, dates, and booleans
- JSON parsing and usage
- Truthy and falsy values
- Array methods and data manipulation
Topic 6: Browsers and Events17%- Browser APIs and Web Storage
- Window and document object properties
- Document Object Model (DOM) manipulation
- Event handling, propagation, and delegation
- Script loading and execution order
Topic 7: Debugging and Error Handling7%- Debugging tools and breakpoints
- Error types and exception handling
- Console methods and logging
- Defensive programming practices

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