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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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| Section | Weight | Objectives |
|---|---|---|
| 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 |
| Objects, Functions, and Classes | 25% | - Closures and execution context - Function definitions, parameters, and scope - Object creation, properties, and methods - Decorators and advanced function patterns - Modules and imports/exports - Class syntax, inheritance, and prototypes |
| Debugging and Error Handling | 7% | - Error types and exception handling - Debugging tools and breakpoints - Defensive programming practices - Console methods and logging |
| Variables, Types, and Collections | 23% | - Array methods and data manipulation - Type coercion and conversion rules - Variable declaration and initialization - Truthy and falsy values - Working with strings, numbers, dates, and booleans - JSON parsing and usage |
| Testing | 7% | - Unit testing concepts - Testing frameworks and assertions - Code coverage and best practices - Test doubles and mocks |
| Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Core Node.js modules - Command-line tools and scripts - Module system and require/import |
| Asynchronous Programming | 13% | - Promises and chaining - Fetch API and HTTP requests - Callbacks and callback hell - Async/await syntax - Event loop and micro/macro tasks |
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