The window object is a global object that has the properties pertaining to the current DOM document, which is what's in the tab of a browser. The document property of the window object has the DOM document and associated nodes and methods that we can use to manipulate the DOM nodes and listen to events for each node.
JavaScript ES6 brings new syntax and new awesome features to make your code more modern and more readable. It allows you to write less code and do more. ES6 introduces us to many great features like arrow functions, template strings, class destruction, Modules… and more.
ES6 comes with significant changes to the JavaScript language. It brought several new features like, let and const keyword, rest and spread operators, template literals, classes, modules and many other enhancements to make JavaScript programming easier and more fun.
A while back I read that the System object is a required part of es6 modules, basically a new Object type with all the required semantics for module loading.
Is this a strict es6 requirement? It doesn't seem to be in the latest spec.
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