Exam Name: Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版)
Certification Provider: Salesforce
Corresponding Certification: Salesforce Developer
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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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Salesforce JavaScript Developer roles are in great demand nowadays. The average salaries of Salesforce JavaScript Developer I exam Certified professional in:
- England - 60,200 POUND
- United State - 129,630 USD
- Europe - 63,500 Euro
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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Debugging and Error Handling | 7% | - Defensive programming practices - Error types and exception handling - Console methods and logging - Debugging tools and breakpoints |
| Topic 2: Testing | 7% | - Testing frameworks and assertions - Unit testing concepts - Code coverage and best practices - Test doubles and mocks |
| Topic 3: Asynchronous Programming | 13% | - Event loop and micro/macro tasks - Async/await syntax - Callbacks and callback hell - Promises and chaining - Fetch API and HTTP requests |
| Topic 4: Server-Side JavaScript | 8% | - Node.js fundamentals and runtime - Core Node.js modules - Command-line tools and scripts - Module system and require/import |
| Topic 5: Objects, Functions, and Classes | 25% | - Closures and execution context - Function definitions, parameters, and scope - Modules and imports/exports - Decorators and advanced function patterns - Object creation, properties, and methods - Class syntax, inheritance, and prototypes |
| Topic 6: Variables, Types, and Collections | 23% | - Type coercion and conversion rules - Truthy and falsy values - JSON parsing and usage - Array methods and data manipulation - Variable declaration and initialization - Working with strings, numbers, dates, and booleans |
| Topic 7: Browsers and Events | 17% | - Document Object Model (DOM) manipulation - Script loading and execution order - Event handling, propagation, and delegation - Browser APIs and Web Storage - Window and document object properties |
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