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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:
- JavaScript programmer
- Front end developer
- Support engineer
- Technical Project Manager
- Full stack developer
- Software/backend developer
- Web application developer
- UI/UX Engineer
- Technical Product Manager
- Salesforce developer
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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What is the duration, language, and format of Salesforce JavaScript-Developer-I Exam
- Passing score 65%
- This exam is offered in only English.
- The type of questions is Multiple Choice and situation-based questions.
- This exam consists of 60 questions
- There is a time limit of 105 minutes for the exam.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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
Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Browsers and Events | 17% | - Event handling, propagation, and delegation - Document Object Model (DOM) manipulation - Browser APIs and Web Storage - Window and document object properties - Script loading and execution order |
| Topic 2: Debugging and Error Handling | 7% | - Error types and exception handling - Debugging tools and breakpoints - Console methods and logging - Defensive programming practices |
| Topic 3: Testing | 7% | - Unit testing concepts - Test doubles and mocks - Testing frameworks and assertions - Code coverage and best practices |
| Topic 4: Asynchronous Programming | 13% | - Async/await syntax - Callbacks and callback hell - Fetch API and HTTP requests - Promises and chaining - Event loop and micro/macro tasks |
| Topic 5: Server-Side JavaScript | 8% | - Core Node.js modules - Module system and require/import - Command-line tools and scripts - Node.js fundamentals and runtime |
| Topic 6: Objects, Functions, and Classes | 25% | - Decorators and advanced function patterns - Class syntax, inheritance, and prototypes - Closures and execution context - Object creation, properties, and methods - Function definitions, parameters, and scope - Modules and imports/exports |
| Topic 7: Variables, Types, and Collections | 23% | - Truthy and falsy values - JSON parsing and usage - Working with strings, numbers, dates, and booleans - Variable declaration and initialization - Array methods and data manipulation - Type coercion and conversion rules |



