title: jQuery show loading div for each thumbnail until loaded
body: <p>I have a page with 50 thumbnails that load once a user enters the site.</p>
  
  <p>I am looking at creating a <code>loading...</code> div or possibly make use of an animated gif to display that the thumbnail image is still loading, and then switch to the image once loaded.</p>
  
  <p>What is the best option to use, pure JS or jQuery and how would one approach something like this?</p>
  
  <p>Thanks in advance</p>