Salesforce JavaScript-Developer-I : Salesforce Certified JavaScript Developer (JS-Dev-101)

Pass JavaScript-Developer-I Exam Cram

Exam Code: JavaScript-Developer-I

Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)

Updated: Aug 19, 2026

Q & A: 149 Questions and Answers

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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

  • Objects & Arrays: Data Structures

  • Classes

  • Item Model Document

  • Functions (more functions in higher order)

  • Activities

  • Strings

  • Control of Mistake

  • JavaScript on the backend

  • Discharge

  • Modules

  • Forms of data and operators

  • Scope of Variables

  • Monitor (agnostic platform)

  • Conversion type (inclusive versus explicit)

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.

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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.

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).

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

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:
SectionObjectives
Topic 1: Salesforce Platform Integration- Calling Apex methods from JavaScript
- Lightning Web Components (LWC) JavaScript usage
- Security considerations in Salesforce JavaScript
Topic 2: Testing and Debugging- Debugging techniques and tools
- Unit testing principles
Topic 3: JavaScript Language Fundamentals- Functions, scope, and closures
- Data types, variables, and operators
- ES6+ syntax and features
Topic 4: Asynchronous JavaScript- Promises and async/await
- Event loop and concurrency model
- Error handling in async workflows
Topic 5: Browser and DOM Interaction- DOM manipulation and traversal
- Event handling and propagation
- Browser APIs (fetch, storage, timers)
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