What is ES6/7?

ES6 (ECMAScript 2015) and ES7 (ECMAScript 2016) are versions of the ECMAScript standard, which is the specification for JavaScript. ES6 introduced significant new features like arrow functions, classes, let/const, template literals, destructuring, modules, and promises. ES7 introduced features like Array.prototype.includes() and the exponentiation operator (**). They are commonly used to write modern, more concise, and efficient JavaScript code for web development, server-side applications (Node.js), and mobile app development.