D3 Examples - // source http://jsbin.com/dumude

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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body>
​
<script id="jsbin-javascript">
var a, b, padItems;
​
padItems = function(items, size, pad) {
  var i, _i, _ref;
  if (size == null) {
    size = 3;
  }
  if (pad == null) {
    pad = {};
  }
  if (!(items.length < size)) {
    return items.slice(0, size);
  }
  for (i = _i = _ref = items.length; _ref <= size ? _i < size : _i > size; i = _ref <= size ? ++_i : --_i) {
    items[i] = null;
  }
  return items;
};
​
a = [1, 2];
​
console.log(padItems(a, 10));
​
b = [1, 2, 3, 4, 5];
​
console.log(padItems(b, 2));
​
</script>
​
​
​
<script id="jsbin-source-javascript" type="text/javascript">padItems = (items, size = 3, pad = {}) ->
  unless items.length < size 
    return items[0...size]
  items[i] = null for i in [items.length...size]
  return items
​
a = [1, 2]
​
console.log padItems(a, 10)
​
b = [1, 2, 3, 4, 5]
console.log padItems(b, 2)</script></body>
</html>
    