CERTIFIED JAVASCRIPT DEVELOPER I STUDY GUIDE
Variables, Types, and Collections: 23%
- Given a scenario, write code to create variables and initialize them correctly.
- Given a business requirement, utilize strings, numbers, and dates effectively.
- Given a scenario or example, demonstrate awareness of type coercion and its effects.
- Given a specific scenario, distinguish truthy or falsey evaluations
- Given a list of data, demonstrate data manipulation with array
- Given a JSON response, demonstrate how to operate the JSON object.
Objects, Functions, and Classes: 25%
- Given a business requirement, locate the best function implementation.
- Given a business requirement, apply fundamentals of object implementation to solve the business requirement.
- Given a business requirement, apply fundamentals of class implementation to solve the business requirement.
- Given a JavaScript module, give examples of how to use the module.
- Given a JavaScript decorator, give examples of how to use the decorator.
- Given a block of code, analyze the variable scope and the execution flow
Browser and Events: 17%
- Given a business requirement, utilize Events, event handlers and propagation.
- Given a business requirement, evaluate and manipulate the DOM.
- Given a scenario, utilize the Browser Dev Tools to investigate code behavior.
- Given a scenario and requirements, utilize browser specific APIs.
Debugging and Error Handling: 7%
- Given a scenario, handle errors properly.
- Given code to be debugged, use the console and breakpoints.
Asynchronous Programming: 13%
- Given a scenario, apply asynchronous programming concepts.
- Given a scenario, use event loop and event monitor or determine loop outcomes.
Server Side JavaScript: 8%
- Given a scenario and requirements, infer which Node.js implementation is a good solution.
- Given a scenario and requirements, infer which Node.js CLI command is a good solution.
- Know the core Node.js modules and given requirements, infer which Node.js library/framework is a good solution.
- Given a scenario and requirements, distinguish which Node.Js Package Management solution is the most fittin
Testing: 7%
- With a block of code and the associated Unit Test, determine where the test is ineffective and modify it to make it more effective.
