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  • Exam Code: JavaScript-Developer-I日本語
  • Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
  • Updated: Sep 12, 2026
  • Q & A: 149 Questions and Answers
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  • Exam Code: JavaScript-Developer-I日本語
  • Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
  • Updated: Sep 12, 2026
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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).

How to Prepare for Salesforce JavaScript Developer I Exam

Preparation Guide for Salesforce JavaScript Developer I Exam

Introduction

Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.

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

Difficulty in Writing of Salesforce JavaScript-Developer-I Exam

As Javascript development observed in nearly all organizations, Salesforce JavaScript-Developer-I is the most successful qualification candidates can get on their resume. Professionals have therefore been known to demonstrate concern. But this JavaScript-Developer-I can be very easy to clear if practitioners study with JavaScript-Developer-I exam dumps and then take the JavaScript-Developer-I practice exams. However, with accurate focusing and proper planning content, candidates will clear the test. With the aid of these materials, aspirants get reasonable idea about the kind of questions they pose in actual certification, the certification questions provides the most-represented JavaScript-Developer-I practice exams. The Salesforce experts check RealValidExam JavaScript-Developer-I exam dumps. Certification questions also include a test for practise and is an ideal forum for checking the information achieved.

How to Study the Salesforce JavaScript-Developer-I Exam

The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.

  • Asynchronous Programming

  • Strings

  • Item Model Document

  • Conversion type (inclusive versus explicit)

  • Classes

  • JavaScript on the backend

  • Functions (more functions in higher order)

  • Objects & Arrays: Data Structures

  • Forms of data and operators

  • Monitor (agnostic platform)

  • Discharge

  • Modules

  • Scope of Variables

  • Control of Mistake

  • Activities

To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.

Nowadays, employment situation is becoming more and more rigorous, it's necessary for people to acquire more skills and knowledge when they are looking for a job. Enterprises and institutions often raise high acquirements for massive candidates, and aim to get the best quality talents. Thus a high-quality Salesforce Developer JavaScript-Developer-I日本語 certification will be an outstanding advantage, especially for the employees, which may double your salary, get you a promotion.

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

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

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