hosting example

hosting.js

var test = 'hello'; //window, global var

(function() {
	//function scope, but we can also access variables and functions in the global scope
	//where this function was defined (thus test) and the variables of the parent function
	console.log(test); //ToDo: wird in der console als undefined ausgegeben, warum?

	//function declaration statement, function declarations get hoisted to top of function scope
	function test2(param2, param3) {
		console.log(test);
	}

	//function expression
	var test3 = function(param2, param3) {
		console.log(test);
	};
	var test = 'hello2';

	test2();
	test3();

	//hoisting:
	//all declarations get hoisted (variable and function)
	//thus it would be the same to move the variable declaration
	//on top of function scope.
	//hoisting happens before any code is executed

})();