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Item Model Document
Objects & Arrays: Data Structures
Control of Mistake
Asynchronous Programming
Modules
Functions (more functions in higher order)
Classes
Conversion type (inclusive versus explicit)
Forms of data and operators
Discharge
Scope of Variables
JavaScript on the backend
Activities
Strings
Monitor (agnostic platform)
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
This course is designed for Javascript developers starting on the Salesforce platform who require programming customizations on front-end and back-end. There are no prerequisites for Salesforce JavaScript Developer I Exam. Typical job roles that align to the Salesforce Certified JavaScript Developer I are as follows:
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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).
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| Section | Weight | Objectives |
|---|---|---|
| Variables, Types, and Collections | 23% | - Strings, numbers, and dates - Primitive and complex data types - Type coercion and conversion - JSON parsing and manipulation - Truthy and falsy evaluations - Variable declarations and initialization - Arrays and collections |
| Debugging and Error Handling | 7% | - Console methods for debugging - Breakpoints and code inspection - Error handling techniques (try/catch/finally) - Custom error types |
| Server Side JavaScript | 8% | - Package management (npm) - Server-side JavaScript implementations - Node.js fundamentals - Core Node.js modules - CLI commands |
| Testing | 7% | - Test coverage and reliability - Unit testing concepts - Test effectiveness evaluation - Writing and modifying unit tests |
| Browser and Events | 17% | - Event handling and listeners - Event propagation (bubbling and capturing) - Browser Developer Tools usage - DOM manipulation - Interacting with forms and user input - Browser-specific APIs |
| Objects, Functions, and Classes | 25% | - Prototypal inheritance - ES6 classes and inheritance - Arrow functions - Modules and decorators - Function declarations and expressions - Object creation and manipulation - Execution flow and context - Variable scope and closures - Higher-order functions |
| Asynchronous Programming | 13% | - Promises (creation, chaining, error handling) - Async/Await syntax - Event loop and execution flow - Asynchronous patterns for business requirements - Callbacks |
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