title: Check if an element copy exists in the document
body: <p>I am parsing the document for some elements(specifically anchor tags) and then pushing them into an array. When new elements are added to the page via ajax I run my parser again to collect my elements and push them to my array again. </p>
  
  <p>Problem I am facing is, I want to delete the elements from my array when they are removed from the page, I do not have any unique ids for these elements, they are mere anchor tags. Is there a unique element id attached to the jQuery object of the element? If so, I can push a copy jQuery object to my array instead of standard JS object.</p>
  
  <p>This is not a "check if element exists on page" question. I have a copy of the element, and I want to check if the original elements still exists on page or not, I hope you see the difference between the two questions.</p>