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