Salesforce JavaScript-Developer-I日本語 : Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)

JavaScript-Developer-I日本語 real exams

Exam Code: JavaScript-Developer-I-JPN

Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)

Updated: Jul 20, 2026

Q & A: 149 Questions and Answers

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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

Who should take the Salesforce JavaScript-Developer-I Exam

This course is designed for Javascript developers starting on the Salesforce platform who require programming customizations on front-end and back-end. There are no prerequisites for Salesforce JavaScript Developer I Exam. Typical job roles that align to the Salesforce Certified JavaScript Developer I are as follows:

  • Technical Project Manager
  • JavaScript programmer
  • Full stack developer
  • Web application developer
  • Technical Product Manager
  • Software/backend developer
  • UI/UX Engineer
  • Front end developer
  • Salesforce developer
  • Support engineer

Introduction to Salesforce JavaScript Developer I Exam

The credential Salesforce Accredited JavaScript Developer I is meant for applicants who build JavaScript applications for the web stack on the front-end and/or back-end.This validates both key JavaScript expertise and functional skills for applicants, for example, Lightning Components Platform, and Lightning Web Component technology relevant to JavaScript. Lightning web elements are personalised HTML elements that are designed with traditional HTML and modern JavaScript.

The Salesforce JavaScript Developer I certification requires two parts: the multiple-choice test given by the JavaScript Developer I and the Superbadge Lightning Web Components. In any order, all these credentials can be accessed. A Salesforce Certified Javascript Developer I certification is immediately obtained by adding these two certificates. The qualification applicant for Salesforce JavaScript Accredited Developer I will use the JavaScript language to build front-end or back-end software in one or more frameworks. The applicant will plan, build and evaluate effective , safe and reusable solutions.

The candidate can use JavaScript-specific programming style patterns and can use CSS , HTML, and other languages for integrating JavaScript. With Lightning Web Components, any JavaScript developer can build on Salesforce easily. This means that millions of JavaScript developers around the world will code on Salesforce without learning anything new. Developers can create and deploy brand-new fast apps on Salesforce using the current Lightning Platform development services portfolio and the modern JavaScript language. Salesforce JavaScript Developer I Certificate from Salesforce is designed to help Salesforce partners, customers and employees working on JavaScript as well as the Lightning Component Platform, know-how and knowledge and creation of Lightning web components (LWC's).

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What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam

  • This exam consists of 60 questions
  • There is a time limit of 105 minutes for the exam.
  • This exam is offered in only English.
  • Passing score 65%
  • The type of questions is Multiple Choice and situation-based questions.

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

SectionWeightObjectives
Topic 1: Asynchronous Programming13%- Event loop and execution flow
- Callbacks
- Asynchronous patterns for business requirements
- Async/Await syntax
- Promises (creation, chaining, error handling)
Topic 2: Browser and Events17%- Event propagation (bubbling and capturing)
- Interacting with forms and user input
- Event handling and listeners
- DOM manipulation
- Browser Developer Tools usage
- Browser-specific APIs
Topic 3: Variables, Types, and Collections23%- Type coercion and conversion
- Variable declarations and initialization
- Truthy and falsy evaluations
- JSON parsing and manipulation
- Primitive and complex data types
- Arrays and collections
- Strings, numbers, and dates
Topic 4: Debugging and Error Handling7%- Console methods for debugging
- Error handling techniques (try/catch/finally)
- Custom error types
- Breakpoints and code inspection
Topic 5: Testing7%- Unit testing concepts
- Test coverage and reliability
- Test effectiveness evaluation
- Writing and modifying unit tests
Topic 6: Server Side JavaScript8%- Node.js fundamentals
- CLI commands
- Server-side JavaScript implementations
- Package management (npm)
- Core Node.js modules
Topic 7: Objects, Functions, and Classes25%- ES6 classes and inheritance
- Function declarations and expressions
- Prototypal inheritance
- Execution flow and context
- Arrow functions
- Object creation and manipulation
- Variable scope and closures
- Modules and decorators
- Higher-order functions

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