What is the difference between Window and window?

Question

What is Window ?

Here\'s what I see on the console in Chrome :

    window
    Window {top: Window, window: Window, location: Location,         


        

Answer 1

console outputs from the Chrome browser:

console.log(window instanceof Window);      // true
console.log(window.constructor === Window); // true
console.log(this);   // Window {document:document, alert:ƒ, setTimeout:ƒ,..}
console.log(window); // Window {document:document, alert:ƒ, setTimeout:ƒ,..}
console.log(Window); // ƒ Window() { [native code] }