Get window height on mobile devices (especially iPhones) without using jQuery

Question

All the answers on SO for fetching the device's height seem based on jQuery. We need something in pure JavaScript before the jQuery code loads.

Answer 1

document.documentElement.clientHeight

There are a number of other methods, too: http://responsejs.com/labs/dimensions/

Answer 2

May be a little late, but use window.screen.height