A simple test to see if your JS and jQuery skills are up to date. Adapted from and inspired by http://bit.ly/fSuTDx

Interview test

var a = 1,
    b = function a(x) {
        x && a(--x);
    };
alert(a);




---------------------------------------
function b(x, y, a) {
    arguments[2] = 10;
    alert(a);
}
b(1, 2, 3);






---------------------------------------
var a = "hello";
(function(){
    var a = "good bye";
})();
alert(a);







What's the difference?
~~~~~~~~~~~~~~~~~~~~~~
jQuery(function($){
    alert("Hello World");
});


$(document).ready(function(){
    alert("Hello World");
});


jQuery(function($){
   alert("Hello World");
}(jQuery));