What is React?

React is a javascript library used for building the user interfaces or single page apps. Complex UI components can be composed into a smaller and isolated piece of code. React is declarative, efficient, and flexible, it updates and renders the only that component where data have been changed. …

JavaScript Knowledge

Var Declarations and Hoisting:

Variable declarations using var are treated as if they are at the top of the function (or global scope, if declared outside of a function) regardless of where the actual declaration occurs; this is called hoisting. Consider the examples below:

function getValue(condition) {

if (condition) {
var value = “blue”;

JavaScript Developer

JavaScript was created in 1995 by Brendan Eich while he was an engineer at Netscape. JavaScript was first released with Netscape 2 early in 1996.

10 Basic knowledge about javascript:

JavaScript number

The JavaScript number object enables you to represent a numeric value. It may be integer or floating-point. …

Abdullah Al Akash

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