codex-lv3-may-2025

JavaScript Practice

Practice Set 1

On LearnJavaScript.online.

• Basic Functions
• Strings
• [Numbers]

Practice Set 2

On Educative

• Logical Operators
• Comparison Operators
• Functions (Four parts)
• Objects
• Arrays
• Array Methods

Further Reading…

• Null vs. Undefined
• Operators (Including +, -, *, /, and %)
• Type Coercion when combining Strings and Numbers
• For-in Loops

Practice Set 3

(Intermediate Level)

• Variable Scope
• Value vs. Reference
• .map method on Arrays

Practice Set 4

From JavaScript: From Beginner to Advanced (Requires GitHub For Education Membership)

• Asynchronous Functions (Requires GitHub For Education Membership)
  • Asynchronicity In JavaScript (Requires GitHub For Education Membership)
  • Callback Functions (Requires GitHub For Education Membership)
  • Promises (Requires GitHub For Education Membership)
  • Async/Await (Requires GitHub For Education Membership)
  • Error Handling (Requires GitHub For Education Membership)
  • Events in Web Page (Requires GitHub For Education Membership)

Practice Set 5

From: Simplifying JavaScript: A Handy Guide for Software Engineers

• Review: Using Objects
• Object Creation Shortcut
• Spread Operator with Arrays (Requires GitHub For Education Membership)
• Spread Operator with Objects (Requires GitHub For Education Membership)
• Using the spread operator in Arrays instead of .push()

Practice Set 5

Your are required to apply for GitHub for Education for free access for 30 days to Scrimba’s courses.

• Object Spread Operators
• Object Destructuring
• Ternary Operators
• Async/Await
• Short Circuit with &&

Practice Set 6

Your are required to apply for GitHub for Education for free access for 30 days to Scrimba’s courses.

Array methods

• .includes()
• .map()
• .join()
• .filter()

Code Katas

• React Katas - Practice React concepts with focused coding exercises

More Practice with Scrimba.com

JavaScript Deep Dive (Pro)

Learn Modern JavaScript (Free)

• Arrow Functions
• Spread Operator for Arrays
• Destructuring

Introduction to es6 (Free)

• Destructuring Objects
• Destructuring Arrays
• POJO JS Object Literal Shortcuts
• Spread Operator on Arrays and Objects
• Arrow Functions
• Fetch
• Async/Await
• Import/Export

Clean Code (Free)

• Functions (6 lessons)

Supabase Course

Intro To Supabase (Free)

React Course

• Object Destructuring
• React Forms

Mini Lessons

• Changing a String to Snake Case - Learn how to write functions that convert strings to snake_case format
• Importing Functions with Node.js - Learn how to organize code into separate files and import functions using ES6 modules