1. ECMAScript 2015 (ES6)

    Support for the ECMAScript 2015 specification. Features include Promises, Modules, Classes, Template Literals, Arrow Functions, Let and Const, Default Parameters, Generators, Destructuring Assignment, Rest & Spread, Map/Set & WeakMap/WeakSet and many more.

  2. javascript function: default parameters

  3. javascript function: default parameters: destructured parameter with default value assignment

  4. javascript function: default parameters: parameters without defaults after default parameters