PDF Version DemoHow to Prepare for Salesforce JavaScript Developer I Exam
Preparation Guide for Salesforce JavaScript Developer I Exam
Introduction
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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There are the following steps for registering the Salesforce JavaScript Developer I exam. Step 1: Visit Salesforce Exam Registration Step 2: Signup/Login to Salesforce account Step 4: Select Date, time and confirm with the payment method
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Salesforce JavaScript-Developer-I日本語 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing | 7% | - Test coverage and reliability - Test effectiveness evaluation - Writing and modifying unit tests - Unit testing concepts |
| Topic 2: Browser and Events | 17% | - Event propagation (bubbling and capturing) - Interacting with forms and user input - DOM manipulation - Event handling and listeners - Browser Developer Tools usage - Browser-specific APIs |
| Topic 3: Objects, Functions, and Classes | 25% | - Function declarations and expressions - Modules and decorators - Variable scope and closures - Execution flow and context - Object creation and manipulation - Higher-order functions - ES6 classes and inheritance - Prototypal inheritance - Arrow functions |
| Topic 4: Asynchronous Programming | 13% | - Async/Await syntax - Callbacks - Asynchronous patterns for business requirements - Promises (creation, chaining, error handling) - Event loop and execution flow |
| Topic 5: Debugging and Error Handling | 7% | - Custom error types - Breakpoints and code inspection - Error handling techniques (try/catch/finally) - Console methods for debugging |
| Topic 6: Variables, Types, and Collections | 23% | - Variable declarations and initialization - JSON parsing and manipulation - Strings, numbers, and dates - Arrays and collections - Primitive and complex data types - Truthy and falsy evaluations - Type coercion and conversion |
| Topic 7: Server Side JavaScript | 8% | - Core Node.js modules - CLI commands - Server-side JavaScript implementations - Package management (npm) - Node.js fundamentals |
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