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Updated: Jul 20, 2026
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For more info read reference:
Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce JavaScript Developer I Certification Path
You must get an idea of exactly what this certification is, before investing your valuable time, effort, or money in Salesforce. The demand and the need for Salesforce certified professionals are rapidly growing and so Salesforce JavaScript Developer I Certification is becoming more and more popular. Different types of online training sessions are provided such as Intellipaat 's online training sessions for the Salesforce JavaScript Developer I Qualification . It is instructor-led teaching by subject professionals working in major organizations. This style of training includes live sessions with the teacher, along with a forum where you can clear all your course-based doubts.
Self-paced sessions are also offered. This training mode involves pre-recorded video sessions. You can conveniently return to these talks and revisit the subjects you have skipped whether you have any difficulties with the lectures or have difficulty keeping up with the online meetings. You will also use these sessions to finish your exercise at your speed while you access these online lessons throughout your life.
Salesforce JavaScript-Developer-I日本語 Exam Overview:
| Certification Vendor: | Salesforce |
| Exam Name: | Salesforce Certified JavaScript Developer I Exam |
| Exam Number: | JS-Dev-101 / JavaScript-Developer-I |
| Available Languages: | English, Japanese |
| Exam Duration: | 105 minutes |
| Real Exam Qty: | 60 scored + up to 5 unscored |
| Related Certifications: | Salesforce Certified Platform Developer I Salesforce Certified Lightning Web Components Specialist |
| Exam Price: | USD 200 (+ applicable taxes) |
| Passing Score: | 65% |
| Certificate Validity Period: | No expiration; requires regular maintenance via Trailhead modules |
| Exam Format: | Multiple-choice, Multiple-select |
| Recommended Training: | Salesforce JavaScript Developer I Certification Prep |
| Exam Registration: | Salesforce Certification Registration |
| Sample Questions: | Salesforce JavaScript-Developer-I日本語 Sample Questions |
| Exam Way: | Online proctored or onsite at authorized testing centers |
| Pre Condition: | No formal prerequisites; 1–2 years of JavaScript development experience recommended |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascript-developer-i |
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Asynchronous Programming | 13% | - Promises and chaining - Callbacks and callback hell - Fetch API and HTTP requests - Async/await syntax - Event loop and micro/macro tasks |
| Debugging and Error Handling | 7% | - Error types and exception handling - Console methods and logging - Defensive programming practices - Debugging tools and breakpoints |
| Browsers and Events | 17% | - Event handling, propagation, and delegation - Script loading and execution order - Browser APIs and Web Storage - Document Object Model (DOM) manipulation - Window and document object properties |
| Testing | 7% | - Unit testing concepts - Test doubles and mocks - Testing frameworks and assertions - Code coverage and best practices |
| Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Core Node.js modules - Command-line tools and scripts - Module system and require/import |
| Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Truthy and falsy values - JSON parsing and usage - Working with strings, numbers, dates, and booleans - Variable declaration and initialization - Array methods and data manipulation |
| Objects, Functions, and Classes | 25% | - Function definitions, parameters, and scope - Closures and execution context - Object creation, properties, and methods - Class syntax, inheritance, and prototypes - Decorators and advanced function patterns - Modules and imports/exports |
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