Framework or Library — First things first react is not a framework it's a library. Frameworks are much wider and framework pushes you to follow rules and write code in a certain way. On the other hand, the library is much smaller than the framework. JSX — JSX stands for…

Hoisting — If you are new to javascript then you will find hoisting a little bit wired but in this article, I will simplify the concept of hoisting. Hoisting is a javascript concept, not a feature. So what the heck is hoisting?? In general, hoisting is a mechanism where variable…

String.prototype.charAt() — The charAt() method returns the character at the specified index. String index starts from 0, so the first index is 0 and the last index of the string is string.length()-1. var str = "hello world"; var res = str.charAt(0); console.log(res); // prints 'h' console.log(str.charAt(4)); // prints '0' at…