Get the size of the screen, current web page and browser window

Question

How can I get windowWidth, windowHeight, pageWidth, pageHeight, screenWidth, screenHeight,

Answer 1

But when we talk about responsive screens and if we want to handle it using jQuery for some reason,

window.innerWidth, window.innerHeight

gives the correct measurement. Even it removes the scroll-bar's extra space and we don't need to worry about adjusting that space :)