fcf4.js

function speak(string) {
  console.log(string);
}

var delayedFunction = function(fn) {
  return function(val, delay) {
    setTimeout(function() {
      fn(val);
    }, delay);
  };
};

var delayedSpeak = delayedFunction(speak);
delayedSpeak("I'm late!", 1000);      // logs "I'm late" after a 1 second delay