JS createDocumentFragment to avoid reflow

gistfile1.js

// http://www.slideshare.net/nzakas/high-performance-javascript-amazon-devcon-2011
var list = document.getElementsByClassName('items')[0],
fragment = document.createDocumentFragment(),
i, item;

for (i=0; i < 10; i++) {
	item = document.createElement('li');
  item.innerHTML = 'item #'+i;
  fragment.appenChild(item);
}

list.appenChild(fragment);