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

  • This exam is offered in only English.
  • The type of questions is Multiple Choice and situation-based questions.
  • This exam consists of 60 questions
  • Passing score 65%
  • There is a time limit of 105 minutes for the exam.

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

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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).

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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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