JSFiddle - React, Tailwind, and code Playground

by snover

HTML

<script src="http://code.jquery.com/jquery-1.4.3rc2.js"></script>

JavaScript

function cacheLength() {
        var l=0;
        for (var i in $.cache) { l++ };
        return l;
      }

      $(function() {
          var length =  {
            before: cacheLength()
          }

          $(document.body).html('<span>hello</span>');
          $('span').wrap('<div>');
          length.inBetween = cacheLength();
          $(document.body).html('');
          length.after = cacheLength();

          console.log(length);
          console.log('cached clean up properly: ', length.before == length.after);
        });