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

JavaScript-Developer-I actual test
  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Aug 30, 2026
  • Q & A: 149 Questions and Answers
  • PDF Demo
  • PC Test Engine
  • Online Test Engine
  • Total Price: $59.99  

About Salesforce JavaScript-Developer-I Exam

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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.

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

  • Modules

  • JavaScript on the backend

  • Strings

  • Objects & Arrays: Data Structures

  • Conversion type (inclusive versus explicit)

  • Forms of data and operators

  • Scope of Variables

  • Functions (more functions in higher order)

  • Discharge

  • Monitor (agnostic platform)

  • Classes

  • Control of Mistake

  • Item Model Document

  • 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.

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

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Server-Side JavaScript8%- Command-line tools and scripts
- Core Node.js modules
- Module system and require/import
- Node.js fundamentals and runtime
Browsers and Events17%- Document Object Model (DOM) manipulation
- Script loading and execution order
- Event handling, propagation, and delegation
- Window and document object properties
- Browser APIs and Web Storage
Asynchronous Programming13%- Promises and chaining
- Callbacks and callback hell
- Event loop and micro/macro tasks
- Async/await syntax
- Fetch API and HTTP requests
Debugging and Error Handling7%- Console methods and logging
- Error types and exception handling
- Debugging tools and breakpoints
- Defensive programming practices
Variables, Types, and Collections23%- Type coercion and conversion rules
- Working with strings, numbers, dates, and booleans
- Variable declaration and initialization
- Array methods and data manipulation
- Truthy and falsy values
- JSON parsing and usage
Objects, Functions, and Classes25%- Modules and imports/exports
- Class syntax, inheritance, and prototypes
- Function definitions, parameters, and scope
- Object creation, properties, and methods
- Decorators and advanced function patterns
- Closures and execution context
Testing7%- Code coverage and best practices
- Testing frameworks and assertions
- Unit testing concepts
- Test doubles and mocks

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