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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
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.
Asynchronous Programming
Monitor (agnostic platform)
Strings
Control of Mistake
Item Model Document
Discharge
Forms of data and operators
Modules
Activities
Functions (more functions in higher order)
JavaScript on the backend
Scope of Variables
Classes
Objects & Arrays: Data Structures
Conversion type (inclusive versus explicit)
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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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Asynchronous Programming | 13% | - Promises (creation, chaining, error handling) - Asynchronous patterns for business requirements - Async/Await syntax - Event loop and execution flow - Callbacks |
| Topic 2: Objects, Functions, and Classes | 25% | - Variable scope and closures - Prototypal inheritance - ES6 classes and inheritance - Execution flow and context - Arrow functions - Modules and decorators - Higher-order functions - Object creation and manipulation - Function declarations and expressions |
| Topic 3: Variables, Types, and Collections | 23% | - Primitive and complex data types - Strings, numbers, and dates - JSON parsing and manipulation - Arrays and collections - Variable declarations and initialization - Truthy and falsy evaluations - Type coercion and conversion |
| Topic 4: Browser and Events | 17% | - DOM manipulation - Interacting with forms and user input - Event propagation (bubbling and capturing) - Browser-specific APIs - Event handling and listeners - Browser Developer Tools usage |
| Topic 5: Server Side JavaScript | 8% | - Server-side JavaScript implementations - Node.js fundamentals - Package management (npm) - CLI commands - Core Node.js modules |
| Topic 6: Testing | 7% | - Writing and modifying unit tests - Test coverage and reliability - Test effectiveness evaluation - Unit testing concepts |
| Topic 7: Debugging and Error Handling | 7% | - Console methods for debugging - Breakpoints and code inspection - Error handling techniques (try/catch/finally) - Custom error types |
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