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/* this is an error
function() {
console.log("hello");
}
*/
// current context in this outermost scope
var c = " foobar";
// prints nothing, code doesn't execute
(function() {
console.log('hello' + c);
});
// () at the end executes declared function
// NOTICE that functions are objects, better yet, first-class objects, since
// they can be assigned to a variable
(function() {
console.log('hello' + c);
})();
// prints hello again foobar
(function() {
console.log('hello again' + c);
}).call(this);
// prints hello again cruel world foobar
(function(par1, par2) {
console.log('hello again' + par1 + par2 + c);
}).apply(this, [" cruel", " world"]);
// prints 7 and 13
var f = function() { return 7; };
var g = (function() { return 13; });
console.log(f());
console.log(g());
(function() {
// "use strict" cannot be used since 'this' is an undeclared object, it
// exists but only for life of its scope
this.x = "barfoo";
console.log(x);
console.log(this.x);
(function() {
// we're lucky here since js searches for x in higher scopes
console.log(x);
console.log(x);
})();
})();
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