Salesforce Salesforce Certified JavaScript Developer (JS-Dev-101) - JavaScript-Developer-I Valid Dumps

Updated: Aug 13, 2026
Q & A: 149 Questions and Answers

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About Salesforce JavaScript-Developer-I Exam

What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam

  • 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.
  • Passing score 65%
  • This exam consists of 60 questions

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:

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

Benefits in Obtaining Salesforce JavaScript-Developer-I Certification

With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.

The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).

With the development of science and technology, the competition in all kinds of industries has become more and more fierce (Salesforce Certified JavaScript Developer (JS-Dev-101) exam study material), especially the industry. When it comes to competition, the topic generally reminds us of a saying: "survival of the fittest". As a worker, it is universally acknowledged that getting a certification (without Salesforce Certified JavaScript Developer (JS-Dev-101) interactive testing engine) is a good way to pale others by showing your ability and talent in the exam. I am so glad to tell you that our company would like to be your best learning partner in the course of preparing for the exam. Our company has been engaged in compiling the Salesforce Certified JavaScript Developer (JS-Dev-101) exam study material for workers during the ten years, and now we are second to none in the field. We are so proud that our Salesforce Salesforce Certified JavaScript Developer (JS-Dev-101) latest study material has helped numerous workers to pass the exam as well as getting the certification in many different countries. As to the advantages of our exam training material, there is really a considerable amount to mention, and I will list three of them for your reference.

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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

Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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