title: How to target elements using tumblr variables in JavaScript?
body: <p>I am struggling to target specific posts in my javascript. Tumblr has own variables such as {PostID} but I can't use them in Javascript in my theme or at least I don't know how to do it. </p>
  
  <p>My example:</p>
  
  <p>I want to check if in a post a div's content is overflown.
  If that's the case JS should adjust the CSS of just this one's post.
  And then JS should move to the next post and so on. </p>