javascript foreach object keys
var lunch = {
	sandwich: 'ham',
	snack: 'chips',
	drink: 'soda',
	desert: 'cookie',
	guests: 3,
	alcohol: false,
};
Object.keys(lunch).forEach(function (item) {
	console.log(item); // key
	console.log(lunch[item]); // value
});
// returns "sandwich", "ham", "snack", "chips", "drink", "soda", "desert", "cookie", "guests", 3, "alcohol", false
