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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
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How much Salesforce JavaScript-Developer-I Exam Cost
The price of the Salesforce JavaScript Developer I certification is $200 USD, for more information related to the Salesforce JavaScript-Developer-I Exam please visit Salesforce website.
How to Study the Salesforce JavaScript-Developer-I Exam
The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.
Forms of data and operators
Discharge
Monitor (agnostic platform)
Conversion type (inclusive versus explicit)
Item Model Document
Activities
Asynchronous Programming
Strings
Modules
Scope of Variables
Functions (more functions in higher order)
Classes
Objects & Arrays: Data Structures
JavaScript on the backend
Control of Mistake
To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.
The development of science and technology makes our life more comfortable and convenient, which also brings us more challenges. Many company requests candidates not only have work experiences,but also some professional certificates. So, it is very neccessary to get the Salesforce Certified JavaScript Developer (JS-Dev-101) exam certification for a better future.
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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 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Testing | 7% | - Code coverage and best practices - Unit testing concepts - Test doubles and mocks - Testing frameworks and assertions |
| Variables, Types, and Collections | 23% | - Truthy and falsy values - Variable declaration and initialization - Type coercion and conversion rules - Working with strings, numbers, dates, and booleans - JSON parsing and usage - Array methods and data manipulation |
| Server-Side JavaScript | 8% | - Module system and require/import - Core Node.js modules - Node.js fundamentals and runtime - Command-line tools and scripts |
| Debugging and Error Handling | 7% | - Debugging tools and breakpoints - Defensive programming practices - Console methods and logging - Error types and exception handling |
| Browsers and Events | 17% | - Event handling, propagation, and delegation - Window and document object properties - Script loading and execution order - Document Object Model (DOM) manipulation - Browser APIs and Web Storage |
| Objects, Functions, and Classes | 25% | - Object creation, properties, and methods - Modules and imports/exports - Decorators and advanced function patterns - Class syntax, inheritance, and prototypes - Closures and execution context - Function definitions, parameters, and scope |
| Asynchronous Programming | 13% | - Async/await syntax - Event loop and micro/macro tasks - Promises and chaining - Fetch API and HTTP requests - Callbacks and callback hell |







