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With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.
The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).
| Section | Weight | Objectives |
|---|---|---|
| Server Side JavaScript | 8% | - CLI commands - Server-side JavaScript implementations - Core Node.js modules - Node.js fundamentals - Package management (npm) |
| Testing | 7% | - Test effectiveness evaluation - Writing and modifying unit tests - Unit testing concepts - Test coverage and reliability |
| Browser and Events | 17% | - Browser-specific APIs - Browser Developer Tools usage - Interacting with forms and user input - Event handling and listeners - Event propagation (bubbling and capturing) - DOM manipulation |
| Variables, Types, and Collections | 23% | - Truthy and falsy evaluations - Primitive and complex data types - Type coercion and conversion - Strings, numbers, and dates - Variable declarations and initialization - Arrays and collections - JSON parsing and manipulation |
| Asynchronous Programming | 13% | - Asynchronous patterns for business requirements - Event loop and execution flow - Promises (creation, chaining, error handling) - Async/Await syntax - Callbacks |
| Debugging and Error Handling | 7% | - Breakpoints and code inspection - Console methods for debugging - Error handling techniques (try/catch/finally) - Custom error types |
| Objects, Functions, and Classes | 25% | - ES6 classes and inheritance - Execution flow and context - Object creation and manipulation - Prototypal inheritance - Arrow functions - Modules and decorators - Variable scope and closures - Higher-order functions - Function declarations and expressions |
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