title: Too much html element slow down jquery
body: <p>I have a js script to get a datafeed and built some div according to the response text.</p>
  
  <p>I have already used web worker and ajax to split the read datafeed and build html code process.</p>
  
  <p>However while I append the html to my container, it becomes slow (let say 18000's div)</p>
  
  <p>Then I change the method to append the 200 div for scroll to down of my container.</p>
  
  <p>It becomes very fast, but while all items render, the other process start to become slow,
  for example if I make the container show and hide, it is pretty slow.</p>
  
  <p>I found another solution is to use z-index, it makes the show hide process much faster.</p>
  
  <p>However, while I need to change the container content, it becomes slow again.</p>
  
  <p>Any idea or solution?</p>