NodeJS - Scheduled Loop

nodeJs.scheduledLoop.js

// How wait inside of loop...

// Countdown
var counter = 10
var countdown = function() {
  console.log(counter)
  counter--
  return (counter > 0)
}

// Run callback until it return false (when countdown end in this case)
function scheduledLoop(cb) {
    if (cb()) setTimeout(scheduledLoop, 1000, countdown)   
}
scheduledLoop(countdown)

// Another way to do it is using setInterval, and when countdown ends, 
// uning clearInterval (but this one, I thnk that is more elegant)