function example(array, action) {

  console.log('action: ' + action.name);

  array.forEach(function(item, i) {

    console.log(i + ': ' + action(item));

  });

  console.log('=====');

}

​

var arr = [0.9999, 14.88, 12345.1];

​

example(arr, Math.ceil);

example(arr, Math.floor);

example(arr, Math.round);