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Editorial Team
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Asked: 2026-06-12T14:23:00+00:00

Hello guys I have two small questions about my facebook application link and JS

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Hello guys I have two small questions about my facebook application link and JS SDK. So let me explain:

1- Well as I understood from Facebook JS SDK, the enter image description here should be left just empty. But still I am a little dizzy and I want to make sure whether we should put our page content into it or it should be left empty?
Please make me sure about it.

2- I have put some changes in my css and markup of my page but after one day I can not see some of the changes in my facebook application link.
How can I see the result of changes if there is such a way??

Thank you very much indeed.

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1 Answer

  1. Editorial Team

    Let me answer this for you:

    1) Yes, It should be left empty and here’s the info on why it’s required quoted from JS SDK docs:

    The JavaScript SDK requires the fb-root element in order to load properly and a call to
    FB.init to initialize the SDK with your app ID correctly.

    The fb-root element must not be hidden using display: none or
    visibility: hidden, or some parts of the SDK will not work properly in
    Internet Explorer.

    The SDK inserts elements into fb-root which expect to be positioned
    relative to the body or relative to an element close to the top of the
    page. It is best if the fb-root element is not inside of an element
    with position: absolute or position: relative. If you must place the
    fb-root element inside of a positioned element, then you should also
    give it a position close to the top of the body or some parts of the
    SDK may not work properly.

    2) It’s most probably a cache problem, there’s a similar question with an issue of css which has been answered previously: Caching for css content for iphone FB APP

    Also to get your browser/visitors browser to re-fetch your CSS file, The trick is to pass a query param/variable at the end of the CSS file url like so: ?v=1

    <link rel="stylesheet" href="css/style.css?v=1">

    This will automatically make your browser or maybe even facebook to fetch your CSS file again with the new changes. Make sure to change the number everytime you update your files so you could see the changes instantly.

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