ScopesFirstExample.js

// Lexical scope means compile time scope

var foo = "bar"; 

function bar(){
	var foo = "baz"; //This is called shadowing. It will be in the local scope.

	function baz(foo){
		foo = "bam"; // Gets assigned to the local foo again
		bam = "yay";
	}
	
	baz(); // JS variatic functions.
}

bar();
console.log(foo); // bar
console.log(bam); //yay
baz(); // Undefined Reference error!!