title: What is preferred implementation of Chrome extension that catches and reads newly added list values on one specific web page?
body: <p>I need to create a Chrome extension that will work only for one webpage with specific URL. It will monitor changes to list of items (orders) located on page and if new order appears, it will read some values from order and do something with them. It also may be neccessary to refresh the page from time to time (using timer, maybe).<br><br>
  What architechture will be suitable to accomplish such a task? <br><br>
  Now - to thoughts I have so far. I think now of using only one content script bound to page URL. Will it be enough? Or should I introduce some background script also? Or anything else?</p>