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Salesforce JavaScript-Developer-I exam focuses on testing a developer's knowledge of JavaScript and how it can be used to build custom applications on the Salesforce platform. This includes topics such as data modeling, user interface development, and integration with other systems. JavaScript-Developer-I exam is designed to be challenging, but it is also highly respected in the industry and can help developers stand out from the competition.
Salesforce Certified JavaScript Developer I exam is a highly recognized certification that demonstrates a developer's ability to design, develop, and maintain custom applications using JavaScript in the Salesforce platform. Salesforce Certified JavaScript Developer (JS-Dev-101) certification exam is created to test the knowledge and skills of developers in areas like Apex, Visualforce, and Lightning components.
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Reference: https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101
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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Asynchronous Programming | 13% | - Async/Await syntax - Event loop and execution flow - Callbacks - Asynchronous patterns for business requirements - Promises (creation, chaining, error handling) |
| Topic 2: Variables, Types, and Collections | 23% | - Type coercion and conversion - JSON parsing and manipulation - Variable declarations and initialization - Truthy and falsy evaluations - Primitive and complex data types - Strings, numbers, and dates - Arrays and collections |
| Topic 3: Testing | 7% | - Unit testing concepts - Test effectiveness evaluation - Test coverage and reliability - Writing and modifying unit tests |
| Topic 4: Server Side JavaScript | 8% | - Core Node.js modules - Node.js fundamentals - Package management (npm) - Server-side JavaScript implementations - CLI commands |
| Topic 5: Objects, Functions, and Classes | 25% | - Execution flow and context - Modules and decorators - ES6 classes and inheritance - Object creation and manipulation - Function declarations and expressions - Higher-order functions - Arrow functions - Prototypal inheritance - Variable scope and closures |
| Topic 6: Browser and Events | 17% | - Interacting with forms and user input - Browser-specific APIs - DOM manipulation - Browser Developer Tools usage - Event propagation (bubbling and capturing) - Event handling and listeners |
| Topic 7: Debugging and Error Handling | 7% | - Custom error types - Breakpoints and code inspection - Error handling techniques (try/catch/finally) - Console methods for debugging |
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