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

  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Oct 08, 2026
  • Q & A: 149 Questions and Answers

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

Exams are marker of success and failure in our society. So passing the exam is precondition of holding the important certificate. To some people, some necessary certificate can even decide their fate to some extent. As an educated man, we should try to be successful in many aspects or more specific, the Salesforce Certified JavaScript Developer (JS-Dev-101) updated torrent ahead of you right now. Let us get acquainted with our JavaScript-Developer-I study guide with more details right now.

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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.

  • Modules

  • Monitor (agnostic platform)

  • Activities

  • Objects & Arrays: Data Structures

  • Scope of Variables

  • JavaScript on the backend

  • Item Model Document

  • Discharge

  • Strings

  • Asynchronous Programming

  • Conversion type (inclusive versus explicit)

  • Classes

  • Control of Mistake

  • Functions (more functions in higher order)

  • Forms of data and operators

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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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 much Salesforce JavaScript-Developer-I Exam Cost

The price of the Salesforce JavaScript Developer I certification is $200 USD, for more information related to the Salesforce JavaScript-Developer-I Exam please visit Salesforce website.

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

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Topics of Salesforce JavaScript Developer I Exam

Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts Salesforce JavaScript-Developer-I exam will include the following topics:

1. Variable, Types, and Collection: 23%

Scenario based coding Variables Creation and Initialization JSON object understanding

2. Object, Functions, and Classes: 25%

Implementation of different functions Understanding of different modules of Javascript Scope of variables and their execution flow

3. Browser and Events: 17%

Handling and propagation of events Development tools of browsers Understanding of browser specific APIs

4. Asynchronous Programming: 13%

Asynchrounous programming different concepts Monitoring and management of different loops

5. Server Side Javascript: 8%

Implementation of Node.js Understanding of Node.js CLI commands

6. Testing: 7%

Unit Testing effectiveness of different tests

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Debugging and Error Handling7%- Defensive programming practices
- Console methods and logging
- Debugging tools and breakpoints
- Error types and exception handling
Topic 2: Asynchronous Programming13%- Async/await syntax
- Fetch API and HTTP requests
- Promises and chaining
- Event loop and micro/macro tasks
- Callbacks and callback hell
Topic 3: Objects, Functions, and Classes25%- Decorators and advanced function patterns
- Closures and execution context
- Object creation, properties, and methods
- Class syntax, inheritance, and prototypes
- Function definitions, parameters, and scope
- Modules and imports/exports
Topic 4: Testing7%- Testing frameworks and assertions
- Code coverage and best practices
- Test doubles and mocks
- Unit testing concepts
Topic 5: Browsers and Events17%- Window and document object properties
- Document Object Model (DOM) manipulation
- Browser APIs and Web Storage
- Script loading and execution order
- Event handling, propagation, and delegation
Topic 6: Server-Side JavaScript8%- Module system and require/import
- Node.js fundamentals and runtime
- Command-line tools and scripts
- Core Node.js modules
Topic 7: Variables, Types, and Collections23%- Working with strings, numbers, dates, and booleans
- Array methods and data manipulation
- Type coercion and conversion rules
- Variable declaration and initialization
- JSON parsing and usage
- Truthy and falsy values

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