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Updated: Sep 12, 2026
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Salesforce JavaScript-Developer-I日本語 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-101 |
| Available Languages: | English |
| Exam Price: | $200 USD |
| Exam Format: | Multiple-select, Multiple-choice |
| Real Exam Qty: | 60 (plus up to 5 unscored pilot questions) |
| Certificate Validity Period: | None (Credential does not expire) |
| Related Certifications: | Salesforce Certified JavaScript Developer I Credential |
| Exam Duration: | 105 minutes |
| Passing Score: | 65% |
| Sample Questions: | Salesforce JavaScript-Developer-I日本語 Sample Questions |
| Exam Way: | Online (proctored via Pearson VUE) or On-site (at a Pearson VUE testing center) |
| Pre Condition: | None required. 1-2 years of JavaScript development experience (front-end and/or back-end) is strongly recommended. Note: To earn the full credential, candidates must also pass the Lightning Web Components Specialist Superbadge in addition to the JS-Dev-101 exam. |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi |
Benefits in Obtaining Salesforce JavaScript-Developer-I Certification
With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.
The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).
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.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Variables, Types, and Collections | 23% | - Variable declarations and initialization - Truthy and falsy evaluations - Arrays and collections - JSON parsing and manipulation - Primitive and complex data types - Strings, numbers, and dates - Type coercion and conversion |
| Topic 2: Debugging and Error Handling | 7% | - Custom error types - Breakpoints and code inspection - Console methods for debugging - Error handling techniques (try/catch/finally) |
| Topic 3: Testing | 7% | - Test coverage and reliability - Unit testing concepts - Writing and modifying unit tests - Test effectiveness evaluation |
| Topic 4: Server Side JavaScript | 8% | - Server-side JavaScript implementations - Package management (npm) - CLI commands - Node.js fundamentals - Core Node.js modules |
| Topic 5: Objects, Functions, and Classes | 25% | - Modules and decorators - ES6 classes and inheritance - Variable scope and closures - Function declarations and expressions - Higher-order functions - Object creation and manipulation - Prototypal inheritance - Arrow functions - Execution flow and context |
| Topic 6: Browser and Events | 17% | - Browser-specific APIs - Event handling and listeners - Interacting with forms and user input - Browser Developer Tools usage - DOM manipulation - Event propagation (bubbling and capturing) |
| Topic 7: Asynchronous Programming | 13% | - Callbacks - Asynchronous patterns for business requirements - Async/Await syntax - Promises (creation, chaining, error handling) - Event loop and execution flow |
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