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Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts Salesforce JavaScript-Developer-I exam will include the following topics:
1. Variable, Types, and Collection: 23%
Scenario based coding Variables Creation and Initialization JSON object understanding
2. Object, Functions, and Classes: 25%
Implementation of different functions Understanding of different modules of Javascript Scope of variables and their execution flow
3. Browser and Events: 17%
Handling and propagation of events Development tools of browsers Understanding of browser specific APIs
4. Asynchronous Programming: 13%
Asynchrounous programming different concepts Monitoring and management of different loops
5. Server Side Javascript: 8%
Implementation of Node.js Understanding of Node.js CLI commands
6. Testing: 7%
Unit Testing effectiveness of different tests
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The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.
Item Model Document
Asynchronous Programming
Conversion type (inclusive versus explicit)
JavaScript on the backend
Objects & Arrays: Data Structures
Classes
Strings
Activities
Discharge
Scope of Variables
Functions (more functions in higher order)
Modules
Forms of data and operators
Monitor (agnostic platform)
Control of Mistake
To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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Salesforce JavaScript-Developer-I Certification leaning site Salesforce JavaScript-Developer-Is Certification resources
| Section | Weight | Objectives |
|---|---|---|
| Server Side JavaScript | 8% | - Package management (npm) - CLI commands - Node.js fundamentals - Server-side JavaScript implementations - Core Node.js modules |
| Variables, Types, and Collections | 23% | - Type coercion and conversion - Truthy and falsy evaluations - Arrays and collections - JSON parsing and manipulation - Strings, numbers, and dates - Primitive and complex data types - Variable declarations and initialization |
| Asynchronous Programming | 13% | - Async/Await syntax - Callbacks - Asynchronous patterns for business requirements - Promises (creation, chaining, error handling) - Event loop and execution flow |
| Objects, Functions, and Classes | 25% | - Modules and decorators - Object creation and manipulation - ES6 classes and inheritance - Function declarations and expressions - Prototypal inheritance - Higher-order functions - Variable scope and closures - Execution flow and context - Arrow functions |
| Testing | 7% | - Unit testing concepts - Test effectiveness evaluation - Writing and modifying unit tests - Test coverage and reliability |
| Debugging and Error Handling | 7% | - Breakpoints and code inspection - Error handling techniques (try/catch/finally) - Custom error types - Console methods for debugging |
| Browser and Events | 17% | - Browser-specific APIs - Interacting with forms and user input - Event propagation (bubbling and capturing) - Event handling and listeners - DOM manipulation - Browser Developer Tools usage |
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