JavaScript Truthy Values: In JavaScript, a truthy value is considered true when encountered in boolean. Truthy Values: Without zero (0) any number is truthy value. Without Empty String (“”) any string value is truthy value. Any Empty Array [ ] is truthy value. Any Empty Object { } is truthy value. JavaScript Falsy Values: In JavaScript…

What is React? React is the most famous library of JavaScript. It is used for making user interfaces & Single Page Application. How does React Work? In-depth, React maintains a tree. This tree can do different computations on the nodes efficiently. Think about your HTML code as a tree. How the browser treats your DOM (your…

Var Declarations: The var keyword declares a function or globally-scoped variable. Example: var a = 10; if (a === 10) { var a = 20; console.log(a); // expected output: 20 } console.log(a); // expected output: 20 Let Declarations: The let keyword declares a block-scoped local variable. The variable type let shares a lot of…