1. ECMAScript 5

    Full support for the ECMAScript 5 specification. Features include `Function.prototype.bind`, Array methods like `indexOf`, `forEach`, `map` & `filter`, Object methods like `defineProperty`, `create` & `keys`, the `trim` method on Strings and many more.

  2. 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.

  3. htmlobjectelement api: codetype

  4. htmlobjectelement api: type

  5. html element: object: codetype

  6. html element: object: type

  7. javascript built-in: object: getprototypeof

  8. javascript built-in: object: isprototypeof

  9. javascript built-in: object: setprototypeof

  10. javascript built-in: symbol: tostringtag: `tostringtag` available on all dom prototype objects

  11. javascript built-in: typeerror: `typeerror` is serializable

  12. ecmascript 2018 (es9)