/// The variable that a `function` statement defines is initialized
/// before any statements in that function are run.  (That's the
/// one difference between `function f(...) {...}` and `var f = function...`.
/// This allows for "pyramid style", where the function's implementation
/// summarizes its behavior before giving the details (the nested functions).
function request() {
    $.get('request', callback);
    function callback(x) {
        log('received "' + x + '"');
    }
}

request();