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Home › Forums › Other › X-UA-Compatible – Do I need it?

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  • February 2, 2012 at 11:19 am #36473
    snillor
    Member

    I’m a bit confused about the X-UA-Compatible entry in the <head>. Several sources recommend this, but I’m not sure if it does anything valuable, nor what the downside is.

    I think its purpose is to prevent versions of IE from rendering in quirks mode. But isn’t it true that with a proper DOCTYPE, you can avoid quirks mode?

    And it seems that including something like

    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

    causes the page to fail W3C validation.

    So is there any reason to include such a statement?

    Thanks

    February 2, 2012 at 11:21 am #96000
    jamygolden
    Member

    As far as I’m aware, if the browser is using compatibility mode it will default to the default version of the browser and if IE has chrome frame installed it will make use of chrome frame.

    Edit: The title of this thread reminds me of Karl Pilkington

    February 2, 2012 at 1:55 pm #96016
    dfogge
    Participant

    feel free to leave it out if your site is working fine in IE, but if it’s just a matter of appeasing the validators then you can include X-UA-Compatible in the htaccess file.

    here’s how: http://www.456bereastreet.com/archive/201103/x-ua-compatible_and_html5/

    February 4, 2012 at 4:54 pm #96175
    snillor
    Member

    Sorry for the belated reply.

    Thanks for the responses.

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