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

  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Aug 13, 2026
  • Q & A: 149 Questions and Answers

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About Salesforce JavaScript-Developer-I Exam

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).

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Average Salary for Salesforce JavaScript-Developer-I Exam Certified Professional

Salesforce JavaScript Developer roles are in great demand nowadays. The average salaries of Salesforce JavaScript Developer I exam Certified professional in:

  • United State - 129,630 USD
  • Europe - 63,500 Euro
  • England - 60,200 POUND

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

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The world has witnessed the birth and boom of IT industry, the unemployment crisis has stroke all kind of workers, more and more people are facing an increasing number of challenges. At this time, an appropriate Salesforce Salesforce exam certification might become your biggest advantage. The specialized knowledge with JavaScript-Developer-I exam prep files are your foundation of foothold in this competitive society.

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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