tight-loop.js

var g = { a : 1, b : 2 }


function callBack (key, value) {
    console.log("Callback called with key: " + key + "\nAnd value: " + value) ;
}

function doNothing (key, value, cb) {
    true ;
    console.log(key + ": doing nothing") ;
    cb() ;
}

function doLoop () {
    for (k in g) {
        f = function () {
            callBack(k, g[k]) ;
        }
        doNothing(k, g[k], f) ;
    }
}

doLoop() ;