index.js
function fragment(arr, store) {
  var el = document.createDocumentFragment();
  for(var i = 0, l = arr.length; i < l; i++) {
    el.appendChild(render(arr[i], store));
  }
  return el;
}
function fragment(arr, store) {
  var el = document.createDocumentFragment();
  for(var i = 0, l = arr.length; i < l; i++) {
    el.appendChild(render(arr[i], store));
  }
  return el;
}
function fragment ( arr , store ) { var el = document . createDocumentFragment ( ) ; for ( var i = 0 , l = arr . length ; i < l ; i ++ ) { el . appendChild ( render ( arr [ i ] , store ) ) ; } return el ; }
Render fragment of virtual dom.

@param {Array} arr
@param {DataStore} store
@return {DocumentFragment}
@api private
Render fragment of virtual dom .