Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版): JavaScript-Developer-I Exam
"Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)", also known as JavaScript-Developer-I exam, is a Salesforce Certification. With the complete collection of questions and answers, Pass4sureCert has assembled to take you through 149 Q&As to your JavaScript-Developer-I Exam preparation. In the JavaScript-Developer-I exam resources, you will cover every field and category in Salesforce Developer Certification helping to ready you for your successful Salesforce Certification.
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- Exam Code: JavaScript-Developer-I
- Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
- Certification Provider: Salesforce
- Corresponding Certification: Salesforce Developer
- Updated: Jul 26, 2026
- No. of Questions: 149 Questions & Answers with Testing Engine
- Download Limit: Unlimited
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How much Salesforce JavaScript-Developer-I Exam Cost
The price of the Salesforce JavaScript Developer I certification is $200 USD, for more information related to the Salesforce JavaScript-Developer-I Exam please visit Salesforce website.
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What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam
- This exam consists of 60 questions
- The type of questions is Multiple Choice and situation-based questions.
- Passing score 65%
- This exam is offered in only English.
- There is a time limit of 105 minutes for the exam.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
How to book the Salesforce JavaScript-Developer-I Exam
There are the following steps for registering the Salesforce JavaScript Developer I exam. Step 1: Visit Salesforce Exam Registration Step 2: Signup/Login to Salesforce account Step 4: Select Date, time and confirm with the payment method
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing | 7% | - Test doubles and mocks - Code coverage and best practices - Testing frameworks and assertions - Unit testing concepts |
| Topic 2: Browsers and Events | 17% | - Event handling, propagation, and delegation - Browser APIs and Web Storage - Document Object Model (DOM) manipulation - Script loading and execution order - Window and document object properties |
| Topic 3: Objects, Functions, and Classes | 25% | - Class syntax, inheritance, and prototypes - Modules and imports/exports - Closures and execution context - Decorators and advanced function patterns - Function definitions, parameters, and scope - Object creation, properties, and methods |
| Topic 4: Asynchronous Programming | 13% | - Async/await syntax - Promises and chaining - Event loop and micro/macro tasks - Fetch API and HTTP requests - Callbacks and callback hell |
| Topic 5: Debugging and Error Handling | 7% | - Error types and exception handling - Defensive programming practices - Console methods and logging - Debugging tools and breakpoints |
| Topic 6: Variables, Types, and Collections | 23% | - JSON parsing and usage - Array methods and data manipulation - Variable declaration and initialization - Truthy and falsy values - Type coercion and conversion rules - Working with strings, numbers, dates, and booleans |
| Topic 7: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Command-line tools and scripts - Module system and require/import - Core Node.js modules |
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