Waldecir Faria wfaria

## global-variables-are-bad.js
// It is important to declare your variables.

(function() {
    var foo = 'Hello, world!';
    print(foo);  //=> Hello, world!
})();

// Because if you don't, the become global variables.

(function() {
	// It is important to declare your variables.

	(function() {
	var foo = 'Hello, world!';
	print(foo); //=> Hello, world!
	})();

	// Because if you don't, the become global variables.

	(function() {