Concepts to learn in JavaScript

• All about this keyword (how it works in different cases)
• Object cloning (deep copy & shallow copy)
• Scope and concept of hoisting
• Temporal dead zone
• execution context
• Event loop (Micro/Macro tasks)
• Different kinds of functions ( IIFE, Arrow functions, function statements, function expression, Higher Order functions, First Order functions, Anonymous functions, Getter functions)
• HOF - map, filter and reduce - find practical usecase
• Spread vs Rest operator - find practical usecase
• call, apply and bind
• Prototypal inheritance
• Event bubbling/capturing/delegation
• Debouncing and Throttling
• chaining
• currying
• callbacks
• promises
• async and await
• closures
• setTimeout vs setInterval
• Type Coercion
• Memoization
• DOM and BOM