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Instant Download Salesforce : JavaScript-Developer-I日本語 Questions & Answers as PDF & Test Engine
- Exam Code: JavaScript-Developer-I
- Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Updated: Sep 02, 2026
- No. of Questions: 149 Questions and Answers
- Download Limit: Unlimited
Price: $79.98
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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
What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam
- This exam is offered in only English.
- Passing score 65%
- The type of questions is Multiple Choice and situation-based questions.
- There is a time limit of 105 minutes for the exam.
- This exam consists of 60 questions
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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.
Activities
Discharge
Item Model Document
Asynchronous Programming
JavaScript on the backend
Classes
Strings
Control of Mistake
Objects & Arrays: Data Structures
Conversion type (inclusive versus explicit)
Functions (more functions in higher order)
Modules
Monitor (agnostic platform)
Forms of data and operators
Scope of Variables
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.
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Asynchronous Programming | 13% | - Async/await syntax - Fetch API and HTTP requests - Event loop and micro/macro tasks - Promises and chaining - Callbacks and callback hell |
| Topic 2: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Core Node.js modules - Module system and require/import - Command-line tools and scripts |
| Topic 3: Objects, Functions, and Classes | 25% | - Class syntax, inheritance, and prototypes - Modules and imports/exports - Closures and execution context - Object creation, properties, and methods - Function definitions, parameters, and scope - Decorators and advanced function patterns |
| Topic 4: Debugging and Error Handling | 7% | - Defensive programming practices - Console methods and logging - Error types and exception handling - Debugging tools and breakpoints |
| Topic 5: Testing | 7% | - Testing frameworks and assertions - Unit testing concepts - Code coverage and best practices - Test doubles and mocks |
| Topic 6: Variables, Types, and Collections | 23% | - Truthy and falsy values - JSON parsing and usage - Variable declaration and initialization - Array methods and data manipulation - Working with strings, numbers, dates, and booleans - Type coercion and conversion rules |
| Topic 7: Browsers and Events | 17% | - 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 |
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