// 1. Can you predict what will be 'hollered'.
// 2. Walk through the execution as you think out loud.

function holler(val, name, scope){
    console.log("[ "+ scope +" ] variable '" + name + "' has value: " + val)
}

var a = '2';
var c = 'c';

function foo() {
    a = '3';
    var c = 'd';
    holler(a, 'a', 'In foo');
    holler(c, 'c', 'In foo');
	var x = 1;
	if (x) {
		(function () {
			var x = 2;	
            holler(c,'c', 'In anon function');
		}());
        holler(x,'x','In if block');
	}
    holler(x,'x', 'In foo after if block');
    
    function bar() {
        var x = 3;
        a = '4';
    }
    holler(x,'x', 'In foo after bar');
    holler(a,'a', 'In foo after bar');
    bar();
    holler(x,'x', 'In foo after bar() invocation');
    holler(a,'a', 'In foo after bar() invocation');    
}

holler(a, 'a', 'after foo');
holler(c, 'c', 'after foo');

foo();

holler(a, 'a', 'after foo() invocation');
holler(c, 'c', 'after foo() invocation');