.call example - here we demonstrate that functions themselves are objects and can have properties another function will call the properties of another function

gistfile1.txt

//drinking will call chooseWisely and will look for it's liquor property
//within the liquor property is a wine property that will get output

var drinking = function (who) {
    var which_spirit = this.liquor.wine;  
    console.log(which_spirit) // this will output malbec
    return true
};

var chooseWisely = function (ohdeliciouswine, brewski, whiskey) {
    var bourbon = "Makers Mark"
    var wine = ohdeliciouswine || "pinot noir"
    var whiskey = whiskey || bourbon
    var beer = brewski || "miller low life"
    var func_length = chooseWisely.length
    var argument_length = arguments.length
    return {
        wine:wine,
        brew:beer,
        spirits:whiskey,
        length:func_length,
        how_man_args:argument_length
    }
} // this function will return an object

chooseWisely.liquor = chooseWisely("malbec", "guinness")
//invoke chooseWisely and assign it a liquor property whoose value is the return value from chooseWisely
// could of easily just been another variable but we avoid another global
drinking.call(chooseWisely); // here drinking is invoked and uses chooseWisely as the value of this