Salesforce JavaScript-Developer-I-JPN exam dumps - Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)

  • Exam Code: JavaScript-Developer-I-JPN
  • Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
  • Updated: Aug 19, 2026     Q & A: 149 Questions and Answers

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By earning the Salesforce Certified JavaScript Developer I certification, individuals can demonstrate their expertise in developing custom applications on the Salesforce platform using JavaScript. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification can enhance a developer’s career opportunities and make them a more valuable asset to their organization. Additionally, Salesforce Certified JavaScript Developer I certification holders are recognized by the industry as experts in the field and are listed on Salesforce’s official website as certified professionals.

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

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Salesforce Certified JavaScript Developer I certification exam is a challenging assessment that evaluates a developer’s knowledge and skills in building custom applications using the Salesforce Lightning platform. JavaScript-Developer-I-JPN exam tests a developer’s ability to build custom user interfaces, create custom Lightning components, and use Apex and JavaScript to build custom logic and automation. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification is designed for developers who have experience with JavaScript, HTML, and CSS and are familiar with Salesforce’s Lightning Component framework.

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Salesforce Certified JavaScript Developer I exam is designed for developers who have a strong understanding of JavaScript and its application within the Salesforce platform. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification is ideal for professionals who want to demonstrate their skills in building custom applications using JavaScript within the Salesforce environment. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification exam is intended for individuals who have experience in developing custom applications on the Salesforce platform, including Apex and Visualforce pages.

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

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

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