ECMA Script - ES6 Features
Why Should I Learn ES6? React uses ES6, and you should be familiar with some of the new features like: Classes Arrow Functions Variables (let, const, var) Array Methods like .map() Destructuring Modules Ternary Operator Spread Operator function calc(a,b){ const add = a+b; const sub = a-b; const mul = a*b; const div = a/b; return [add,sub,mul,div]; } const [add,sub,mul,div] = calc(2,2); console.log(calc(2,2));