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

JavaScript-Developer-I Exam Simulator
  • Exam Code: JavaScript-Developer-I
  • Exam Name: Salesforce Certified JavaScript Developer (JS-Dev-101)
  • Updated: Aug 09, 2026
  • Q & A: 149 Questions and Answers

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About Salesforce JavaScript-Developer-I Exam Braindumps

Salesforce Developer JavaScript-Developer-I exam certification is an incredibly strong skill set that everyone from small business to enterprise organizations require. There is no downside to any of the JavaScript-Developer-I exam accreditations. Recently, the Salesforce Developer JavaScript-Developer-I exam certification is one of the smartest accreditations an IT engineer chase. Passing the JavaScript-Developer-I exam test provides candidates with an opportunity to demonstrate proficiency with specific technologies. Add this line (JavaScript-Developer-I Salesforce Certified JavaScript Developer (JS-Dev-101) certification) to your resume, and you may find a better job with high salary.

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Salesforce JavaScript-Developer-I exam simulator

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).

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:

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

How to book the Salesforce JavaScript-Developer-I Exam

There are the following steps for registering the Salesforce JavaScript Developer I exam. Step 1: Visit Salesforce Exam Registration Step 2: Signup/Login to Salesforce account Step 4: Select Date, time and confirm with the payment method

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Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources

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

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Asynchronous Programming13%- Callbacks
- Asynchronous patterns for business requirements
- Event loop and execution flow
- Async/Await syntax
- Promises (creation, chaining, error handling)
Topic 2: Testing7%- Test coverage and reliability
- Writing and modifying unit tests
- Test effectiveness evaluation
- Unit testing concepts
Topic 3: Server Side JavaScript8%- Server-side JavaScript implementations
- CLI commands
- Core Node.js modules
- Node.js fundamentals
- Package management (npm)
Topic 4: Browser and Events17%- Event propagation (bubbling and capturing)
- DOM manipulation
- Browser Developer Tools usage
- Event handling and listeners
- Interacting with forms and user input
- Browser-specific APIs
Topic 5: Variables, Types, and Collections23%- Variable declarations and initialization
- JSON parsing and manipulation
- Type coercion and conversion
- Strings, numbers, and dates
- Primitive and complex data types
- Truthy and falsy evaluations
- Arrays and collections
Topic 6: Debugging and Error Handling7%- Custom error types
- Console methods for debugging
- Breakpoints and code inspection
- Error handling techniques (try/catch/finally)
Topic 7: Objects, Functions, and Classes25%- Modules and decorators
- Higher-order functions
- Function declarations and expressions
- Prototypal inheritance
- Arrow functions
- Object creation and manipulation
- Variable scope and closures
- ES6 classes and inheritance
- Execution flow and context

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