ES6 stands for ECMAScript with version 6, which is the standardized version of JavaScript and provides different features to use along with JavaScript. ECMAScript brings us features like class, function, templates, operators, and generators. In this resource, you can find the ES6 cheat sheet.
In this cheat sheet, you can find the list of new features added.
  • Classes
  • Operators
  • Strings
  • Literals
  • Functions
  • Spreads
  • Objects
  • Modules
All these features and many others are explained in a quick manner on this link.