Javascript

JS case types

JS commenting

var, let, const and hoisting

Scoping

Nullish coalescing operator (??), optional chaining operator (?.), logical OR (||) and Falsy

this, bind, call and apply

Destructuring

Spread Operator

Rest operator

Array & Higher Order Functions (HOF)

Deep copy vs Shallow copy

Objects Comparison ^ref

Function Arity

IFFE (Immediately Invoked Function Expression) ^ref

Iterators and generator

Observers

Callback/Promise/Asyncawait

Fetch api

Promise