Chrome extension, [removed] Why is this firing twice?

Question

I have a very very simple bit of code in my (test) Chrome extension:

    function test()
    {
    alert(\"In test!\");
    }

   chrome.tabs.onUpdated.addLi         


        

Answer 1

I was also confused by this and tried to find the answer. Only after some experimentation did I figure out why I was receiving multiple "complete" update events for what I thought was a single page "update".

If your page has iframes, each will trigger a "complete" event and bubble up to the parent content script. So more complex pages will trigger a slew of onUpdated events if they have iframes.