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Passing the Salesforce JavaScript-Developer-I certification exam requires a solid understanding of Salesforce development concepts, as well as a strong knowledge of JavaScript and programming principles. After passing the exam, candidates will be awarded the Salesforce Certified JavaScript Developer I credential, which is recognized by employers and industry professionals worldwide. Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I日本語版) certification can help developers to advance their careers and increase their earning potential.
Salesforce JavaScript-Developer-I is a certification exam designed for professionals who want to demonstrate their expertise in using JavaScript and related technologies to develop custom applications on the Salesforce platform. JavaScript-Developer-I-JPN exam measures the candidate's knowledge of the fundamental concepts of JavaScript, including data types, control structures, functions, arrays, and objects, as well as their ability to apply this knowledge to solve real-world programming problems.
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Salesforce JavaScript-Developer-I exam is a three-hour exam that consists of 60 multiple-choice questions. JavaScript-Developer-I-JPN exam is available in English and Japanese and can be taken either online or onsite. The passing score for the exam is 68%, and candidates are given immediate feedback on their results. JavaScript-Developer-I-JPN exam fee is $200, and candidates can retake the exam after 15 days if they fail.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Browsers and Events | 17% | - Document Object Model (DOM) manipulation - Event handling, propagation, and delegation - Browser APIs and Web Storage - Window and document object properties - Script loading and execution order |
| Debugging and Error Handling | 7% | - Error types and exception handling - Debugging tools and breakpoints - Defensive programming practices - Console methods and logging |
| Testing | 7% | - Unit testing concepts - Code coverage and best practices - Testing frameworks and assertions - Test doubles and mocks |
| Variables, Types, and Collections | 23% | - Truthy and falsy values - Variable declaration and initialization - Array methods and data manipulation - Working with strings, numbers, dates, and booleans - Type coercion and conversion rules - JSON parsing and usage |
| Objects, Functions, and Classes | 25% | - Function definitions, parameters, and scope - Object creation, properties, and methods - Decorators and advanced function patterns - Modules and imports/exports - Class syntax, inheritance, and prototypes - Closures and execution context |
| Server-Side JavaScript | 8% | - Module system and require/import - Command-line tools and scripts - Node.js fundamentals and runtime - Core Node.js modules |
| Asynchronous Programming | 13% | - Async/await syntax - Event loop and micro/macro tasks - Callbacks and callback hell - Fetch API and HTTP requests - Promises and chaining |
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