title: How to make 'Trail effect' (ghosting) in Javascript
body: <p><a href="https://www.youtube.com/watch?v=3niP4L-Kbzc&amp;t=1s" rel="nofollow noreferrer">https://www.youtube.com/watch?v=3niP4L-Kbzc&amp;t=1s</a></p>
  <p>This is a Unity plugin preview video of 'Sprite trail' effect.</p>
  <p>Not in Canvas, but
  I would like to make a same effect with HTML imgs in Javascript.
  (Im thinking of animating elements with 'gsap' plugin, and need trail effects following them while moving)</p>