Selected Text Instance
<p>I have a bunch of text on my document. You can select word/words from it and highlight the text. After you highlight it, an ajax request is sent and the selected word/words are sent to backend (PHP) and processed to be saved into the database. The page is refreshed and the selected text is permanently higlighted.</p>

<p>Now the bad part, if you higlight "the", it will highlight all the "the"'s in the text document. How do I detect which "the" is higlighted through javascript so that only the proper instance is saved in database.</p>
