javascript take width e height of window code example

Example 1: how to get the height of window in javascript

//get screen height of the device by using
window.innerHeight
//get screen width of the device by using
window.innerWidth

Example 2: how to get the size of the window in javascript

var win = window,
    doc = document,
    docElem = doc.documentElement,
    body = doc.getElementsByTagName('body')[0],
    x = win.innerWidth || docElem.clientWidth || body.clientWidth,
    y = win.innerHeight|| docElem.clientHeight|| body.clientHeight;
alert(x + ' × ' + y);