What is React:- React is an open-source, front-end, JavaScript library for building user interfaces or UI components. It is maintained by Facebook and a community of individual developers and companies. React can be used as a base in the development of single-page or mobile applications. Is React a framework:- React…

chartAt() : ChartAt has tow side.The first is the chartAt() method. And the second is to treat the string as an array-like object. These are two ways to arrays an individual chartAt in a string. Example:- ( return ‘dog’.chartAt(1) // return “a” ) (return ‘dog’[1] //return “a”) 2. slice(): Where…

Var Hosting:- var means variable. Variables are declared outside any function. In JavaScript, a variable can be used before it has been declared. Example:- ( <script> var x; x = 5; </script> ) // the ans is 5. the variable has to tow another side. …