1 Reply Latest reply on Apr 18, 2013 4:03 PM by Nancy OShea

    How do I use "X-UA-Compatible" tag?


      I am trying to get browser compatibility built in on a website I am developing, and from what I have found out you use X-UA-Compatible to determine this. However what I cannot figure out is how I set the code. I need compatibility for IE 9+, for latest Chrome, and for latest Firefox.


      I have seen meta tag such as <meta http-equiv="X-UA-Compatible" content="chrome=1"> but how do I create this for the above 3 browsers, and is there also any other code I need to include on the webpage. If there is any useful for explaining this meta tag, please include them.



        • 1. Re: How do I use "X-UA-Compatible" tag?
          Nancy OShea Adobe Community Professional & MVP

          I think you're confused about what X-UA does.  It does NOT ensure your site is compatible in all browsers.  It simply forces IE to behave a certain way.  The following example forces IE to use IE9 rendering mode if possible.


               <meta http-equiv="X-UA-Compatible" content="IE=9">


          But what if your site visitor doesn't have IE9?  Then what?  A fallback would be this which says, use IE7 or IE9 but not IE8 mode:


               <meta http-equiv="X-UA-Compatible" content="IE=7, IE=9">


          The bigger issue is if your site isn't performing well in all major browsers, chances are something's wrong with it.  Validate your code, fix errors & re-examine your design approach. 

               CSS - http://jigsaw.w3.org/css-validator/

               HTML - http://validator.w3.org/




          Nancy O.

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