How to find viewport height, viewport width using JavaScript

viewport-info.js

// This snippet will get the width, height of the viewport everytime you resize the browser window.
// The weight, height will be displayed on console window.
$(document).ready(function(){

	var viewportWidth = $(window).width();
	var viewportHeight = $(window).height();

	console.info('Viewport W = ' + viewportWidth);
	console.info('Viewport H = ' + viewportHeight);

	$(window).resize(function() {
		viewportWidth = $(window).width();
	    viewportHeight = $(window).height();
		console.info('Viewport W = ' + viewportWidth);
		console.info('Viewport H = ' + viewportHeight);
	});
});