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

  • Exam Code: JavaScript-Developer-I-JPN
  • Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
  • Updated: Sep 10, 2026
  • Q & A: 149 Questions and Answers

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

How to Study the Salesforce JavaScript-Developer-I Exam

The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.

  • Functions (more functions in higher order)

  • Control of Mistake

  • Objects & Arrays: Data Structures

  • Classes

  • Scope of Variables

  • Conversion type (inclusive versus explicit)

  • Forms of data and operators

  • Activities

  • Strings

  • Modules

  • Discharge

  • Monitor (agnostic platform)

  • Item Model Document

  • JavaScript on the backend

  • Asynchronous Programming

To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.

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What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam

  • Passing score 65%
  • This exam consists of 60 questions
  • The type of questions is Multiple Choice and situation-based questions.
  • There is a time limit of 105 minutes for the exam.
  • This exam is offered in only English.

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

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

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

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