How to find dual monitor (secondary monitor) screen width and height? [closed]

Question

How to find dual monitor (secondary monitor) screen width and height? Using javascript or jquery. Can anybody help?

Answer 1

You can't detect a second monitor using Javascript, if you would get screen.width it would just show the total screen width of both monitors. You could however use window.innerWidth to get the size of the web page on the screen as mentioned here: Detect screen width for multiple monitors