JS-Basics

Quick Notes to prepare for JS heavy Interviews (like React and React Native)

Table of Contents

0.0 — Interview Questions

1.1 — Variables

1.2 — Types

1.3 — Scope

1.4 — Closures

1.5 — Function Currying

1.6 — Immutability

2.1 — this

2.2 — Prototype

2.3 — Prototypal Inheritance

2.4 — Classes

3.1 — Map Object

3.2 — Set Object

3.3 — Iterables and Iterators

Glossary

Term	Meaning / Other details
Hoisting	Variable declarations are put into memory during the compile phase In simple words, Hoisting means moving variable declarations to the top of their scope.
Scope	The scope is the current context of execution in which values and expressions are "visible" or can be referenced.
Closure	It is the combination of a function bundled together with references to its surrounding state (Lexical Environment)
Temporal Dead Zone (TDZ)	A variable declared with let, const, or class is said to be in a "temporal dead zone" (TDZ) from the start of the block, till code execution reaches the line where variable is declared and initialized.

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Sources

Topic	Source Link
Javascript	Mozilla Developer Networks (MDN) Codevolution Course Dave Ceddia's Blog Vasanth Bhat's Medium Blog Vasanth Bhat's YT
Markdown	Markdown Guide