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