how can i possibly detect if the browser used by a visitor is outdated or Internet explorer and display a banner at the of the page which will tell the visitor to upgrade its browser..
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possible duplacte of http://stackoverflow.com/questions/348202/display-a-message-when-a-browser-is-unsupported – franchez Feb 06 '14 at 13:16
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Outdated for what ? Html5 ? – Clément Andraud Feb 06 '14 at 13:17
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1Frankly, I would not do this...it's pretty rude. Perhaps the user CAN'T update or change browsers...some can't you know. – Paulie_D Feb 06 '14 at 13:19
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I know, but i have to because of the functionality of my site won't work on older browsers.. – user3258603 Feb 06 '14 at 14:37
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<!--[if lt IE x]>
<img src="https://i.stack.imgur.com/I1GAk.png" alt="" />
<![endif]-->
You can use this code as it is. Replace x by IE version you want to "outdate".
franchez
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1Note that as of IE10 conditional comments are not supported and will always "return false", even ` – Niet the Dark Absol Jun 13 '14 at 10:39
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Here I found very sophisticated way to tell user about outdated-browsers:
brasofilo
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Kushal Jayswal
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If you want to detect if a browser support X or Y feature of HTML5 or CSS3, you have modernizr
you can generate a script HERE for detect just old browser and propose an upgrade
Clément Andraud
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