Function Queue

functionQueue.js

var puzzlers = [
    function ( a ) { return 8*a - 10; }, 
    function ( a ) { return (a-3) * (a-3) * (a-3); }, 
    function ( a ) { return a * a + 4; },
    function ( a ) { return a % 5; }
];
var start = 2;
var applyAndEmpty = function( input, queue ) {

  var length = queue.length;
  for(var i = 0; i<length; i++){
    input = queue.shift()(input);
  }
  return input;
};
alert(applyAndEmpty(2, puzzlers));