React is one of the most popular and trending Javascript library which makes our development very easy with some new and smart concepts in the world of making a website or web application. Almost whenever a new learner starts to learn any new thing, some misconceptions mislead him to understands…

01 JavaScript? — Javascript is a scripting language also a dynamic programming language. In 1995 Brendan Eich make it come to the market to make a good user experience on the web. After 25 years JavaScript becomes a top-rated programming language, especially after Node Js. Node Js late Javascript operate on Sarver. …

1.array.concat() — Concat means add. The concat() method is used to marge 2 or more array