JS get the height and width of the page _javascript tips

Today in doing a pop-up dialog, the use of the parent page to take the width and height of the method.

Tried a few ways, such as Document.body.clientwidth,window.screen.width,document.body.scrollwidth and other methods, the discovery is not the result I want, and later found an efficient way to share it immediately:

Add breakpoints to debug "debugger" where height and width are required. Then in the Monitoring page to enter Document.body, see the properties of all the body to see which result is what you need, if not suitable can also enter window, and then see if there is a suitable property window, today my problem solving is solved by this way, the attribute is Window.inne Rwidth and Window.innerheight.

Hope that you encounter such problems can be less detours.