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Last Updated: Aug 23, 2026
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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.
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 |
|---|---|---|
| Debugging and Error Handling | 7% | - Error handling techniques (try/catch/finally) - Console methods for debugging - Custom error types - Breakpoints and code inspection |
| Asynchronous Programming | 13% | - Async/Await syntax - Asynchronous patterns for business requirements - Callbacks - Event loop and execution flow - Promises (creation, chaining, error handling) |
| Browser and Events | 17% | - Interacting with forms and user input - Event propagation (bubbling and capturing) - Browser-specific APIs - Event handling and listeners - Browser Developer Tools usage - DOM manipulation |
| Objects, Functions, and Classes | 25% | - Higher-order functions - Arrow functions - ES6 classes and inheritance - Object creation and manipulation - Prototypal inheritance - Execution flow and context - Function declarations and expressions - Modules and decorators - Variable scope and closures |
| Testing | 7% | - Unit testing concepts - Test effectiveness evaluation - Writing and modifying unit tests - Test coverage and reliability |
| Server Side JavaScript | 8% | - Server-side JavaScript implementations - Node.js fundamentals - Core Node.js modules - CLI commands - Package management (npm) |
| Variables, Types, and Collections | 23% | - Primitive and complex data types - Strings, numbers, and dates - Arrays and collections - Variable declarations and initialization - Type coercion and conversion - Truthy and falsy evaluations - JSON parsing and manipulation |
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