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Salesforce JavaScript-Developer-I (Salesforce Certified JavaScript Developer I) Certification Exam is an industry-recognized certification for developers who specialize in JavaScript development on the Salesforce platform. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification exam is designed to test the knowledge and skills of developers in the areas of JavaScript, Lightning Web Components, Apex, and Visualforce. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification is a great way to showcase your expertise in Salesforce development and increase your career prospects.
Salesforce JavaScript-Developer-I Certification Exam consists of 60 multiple-choice questions and is a timed exam that lasts for 105 minutes. JavaScript-Developer-I-JPN exam is administered by Salesforce and can be taken either online or at a testing center. To be eligible for the exam, you must have completed the JavaScript Development on the Salesforce Platform course or have equivalent knowledge and experience. Upon passing the exam, you will earn the Salesforce Certified JavaScript Developer I certification, which is a valuable credential for developers looking to advance their careers in Salesforce development.
Salesforce Certified JavaScript Developer I exam is designed for developers who have a strong understanding of JavaScript and its application within the Salesforce platform. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification is ideal for professionals who want to demonstrate their skills in building custom applications using JavaScript within the Salesforce environment. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification exam is intended for individuals who have experience in developing custom applications on the Salesforce platform, including Apex and Visualforce pages.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.
The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing | 7% | - Testing frameworks and assertions - Test doubles and mocks - Unit testing concepts - Code coverage and best practices |
| Topic 2: Browsers and Events | 17% | - Browser APIs and Web Storage - Event handling, propagation, and delegation - Document Object Model (DOM) manipulation - Script loading and execution order - Window and document object properties |
| Topic 3: Debugging and Error Handling | 7% | - Defensive programming practices - Error types and exception handling - Console methods and logging - Debugging tools and breakpoints |
| Topic 4: Server-Side JavaScript | 8% | - Core Node.js modules - Node.js fundamentals and runtime - Module system and require/import - Command-line tools and scripts |
| Topic 5: Objects, Functions, and Classes | 25% | - Decorators and advanced function patterns - Closures and execution context - Modules and imports/exports - Object creation, properties, and methods - Class syntax, inheritance, and prototypes - Function definitions, parameters, and scope |
| Topic 6: Variables, Types, and Collections | 23% | - Type coercion and conversion rules - JSON parsing and usage - Array methods and data manipulation - Truthy and falsy values - Working with strings, numbers, dates, and booleans - Variable declaration and initialization |
| Topic 7: Asynchronous Programming | 13% | - Promises and chaining - Fetch API and HTTP requests - Callbacks and callback hell - Event loop and micro/macro tasks - Async/await syntax |
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