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

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Updated: Aug 01, 2026

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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.

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

Topic	Details
Topic 1	Testing: In the topic, you will be required to evaluate unit tests and improve them. The exam will assess your ability to identify ineffective tests and modify them to make them more robust and accurate. This topic ensures that you can write and maintain effective tests, a crucial skill for ensuring code quality and reliability in professional environments.
Topic 2	Objects, Functions, and Classes: In this section, the focus is on applying object-oriented principles, functions, and classes. As a Salesforce JavaScript programmer, you will need to locate optimal function implementations and understand how to structure objects and classes for business solutions. You will also be tested on your ability to use JavaScript modules and decorators, while analyzing variable scope and execution flow.
Topic 3	Variables, Types, and Collections: The topic will test how effectively JavaScript programmers can handle variable creation, initialization, type coercion, and data manipulation. You will need to demonstrate knowledge of strings, numbers, dates, arrays, and JSON handling. The Javascript Developer I exam will require a deep understanding of these concepts and their proper application in real-world scenarios.
Topic 4	Server Side JavaScript: This section focuses on Node.js and server-side JavaScript. Salesforce JavaScript programmers will be tested on their ability to identify appropriate Node.js implementations and commands for given scenarios. Additionally, you will need to recognize which Node.js core modules, libraries, and package management solutions fit specific requirements, reflecting your understanding of server-side development with JavaScript.
Topic 5	Browser and Events: The topic will challenge your ability to work with events, event handlers, and the DOM. You will need to demonstrate how to manage event propagation and utilize browser-specific APIs. Additionally, proficiency in using browser developer tools to investigate code behavior will be tested, making it crucial for you to understand browser interactions thoroughly.

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

Salesforce JavaScript-Developer-I日本語 Exam Overview:

Certification Vendor:	Salesforce
Exam Name:	Salesforce Certified JavaScript Developer I
Exam Number:	JS-Dev-001
Real Exam Qty:	60
Certificate Validity Period:	1 year (maintenance required via Salesforce certification maintenance modules)
Related Certifications:	Salesforce Certified Platform Developer I Salesforce Certified Platform App Builder Salesforce Certified JavaScript Developer I
Exam Format:	Multiple Choice, Multiple Select
Exam Price:	USD 200 (may vary by region/tax)
Available Languages:	English
Passing Score:	65%
Exam Duration:	105 minutes
Recommended Training:	Salesforce Developer Learning Paths Salesforce Trailhead JavaScript Developer I Prep
Exam Registration:	Salesforce Certification Registration (Webassessor) Salesforce Credentials Page
Sample Questions:	Salesforce JavaScript-Developer-I日本語 Sample Questions
Exam Way:	Online proctored or onsite testing via Kryterion Webassessor
Pre Condition:	No formal prerequisites, but familiarity with JavaScript and Salesforce platform development is strongly recommended.
Official Syllabus URL:	https://trailhead.salesforce.com/credentials/javascriptdeveloper1

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