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

Pass JavaScript-Developer-I Exam Cram

Exam Code: JavaScript-Developer-I

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

Updated: Sep 06, 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.

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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.

  • Functions (more functions in higher order)

  • Objects & Arrays: Data Structures

  • Item Model Document

  • Strings

  • Activities

  • Discharge

  • Classes

  • Conversion type (inclusive versus explicit)

  • Scope of Variables

  • Forms of data and operators

  • Control of Mistake

  • Asynchronous Programming

  • JavaScript on the backend

  • Modules

  • Monitor (agnostic platform)

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.

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

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Free Download JavaScript-Developer-I Valid Exam

What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam
  • Passing score 65%
  • This exam consists of 60 questions
  • The type of questions is Multiple Choice and situation-based questions.
  • This exam is offered in only English.
  • There is a time limit of 105 minutes for the exam.
Salesforce JavaScript-Developer-I Exam Syllabus Topics:
SectionWeightObjectives
Topic 1: Variables, Types, and Collections23%- Strings, numbers, and dates
- Type coercion and conversion
- Variable declarations and initialization
- Primitive and complex data types
- Truthy and falsy evaluations
- JSON parsing and manipulation
- Arrays and collections
Topic 2: Server Side JavaScript8%- Core Node.js modules
- Server-side JavaScript implementations
- Package management (npm)
- Node.js fundamentals
- CLI commands
Topic 3: Debugging and Error Handling7%- Console methods for debugging
- Custom error types
- Error handling techniques (try/catch/finally)
- Breakpoints and code inspection
Topic 4: Asynchronous Programming13%- Event loop and execution flow
- Asynchronous patterns for business requirements
- Promises (creation, chaining, error handling)
- Async/Await syntax
- Callbacks
Topic 5: Objects, Functions, and Classes25%- Higher-order functions
- Prototypal inheritance
- Modules and decorators
- Variable scope and closures
- Function declarations and expressions
- Object creation and manipulation
- Execution flow and context
- Arrow functions
- ES6 classes and inheritance
Topic 6: Testing7%- Test coverage and reliability
- Unit testing concepts
- Test effectiveness evaluation
- Writing and modifying unit tests
Topic 7: Browser and Events17%- DOM manipulation
- Browser Developer Tools usage
- Event handling and listeners
- Interacting with forms and user input
- Browser-specific APIs
- Event propagation (bubbling and capturing)
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