title: js: removing multiple nodes from DOM without multiple reflows
body: <p>i need to add and remove multiple node from DOM while scrolling. To add nodes i found the solution of documentFragment, which allows me to add multiple node with only one reflow.</p>
  
  <p>But removing a great number of nodes is very costly too, so i'm searching for a faster solution.</p>
  
  <p>Now I remove every child with a Node.removeChild(...), which causes a reflow.</p>
  
  <p>Thanks</p>