jsquiz.js

// what are the key differences between:

var foo = function() {
  alert("Hello World");
};

// and

function foo() {
  alert("Hello World");
}

foo is defined at parse time so can be used and var foo is just an alias at run time (i used foo but could be "bar") I dont use it often was just an example of how to get best of both worlds.

Try running:

foo(); // runs the parse time code
function foo () {alert('hello')};
var foo = foo;
foo(); // runs the runtime code.