ECMAScript6 (or ES6 for short) is "a kind of JavaScript" that does not run in the old browsers. It is the modern version of the well-kown ECMAScript (commercially known as JavaScript) and it is heavy inspired from TypeScript.
https://engineering.carsguide.com.au/es5-vs-es6-syntax-6c8350fa6998
The first example is from Polymer Project: https://www.polymer-project.org/2.0/start/quick-tour
class CustomElement extends Polymer.Element {
static get is() { return "custom-element"; }
constructor() {
super();
this.textContent = "I'm a custom-element.";
}
}Right, ES6 classes are available in Chrome 42+ (starting with 2015-04-14)
Documentation: https://googlechrome.github.io/samples/classes-es6/
The second example is from Ionic Framework: https://ionicframework.com/docs/components/#action-sheets
import { ActionSheetController } from 'ionic-angular'; export class MyPage { constructor(public actionSheetCtrl: ActionSheetController) { }
...
Imports and exports are part of ES6 Modules Final Proposal
Recommended book (online): Exploring ES6
