How do I detect IE 8 with jQuery?

I think the best way would be this:

From HTML5 boilerplate:

<!--[if lt IE 7]> <html lang="en-us" class="no-js ie6 oldie"> <![endif]-->
<!--[if IE 7]>    <html lang="en-us" class="no-js ie7 oldie"> <![endif]-->
<!--[if IE 8]>    <html lang="en-us" class="no-js ie8 oldie"> <![endif]-->
<!--[if gt IE 8]><!--> <html lang="en-us" class="no-js"> <!--<![endif]-->

in JS:

if( $("html").hasClass("ie8") ) { /* do your things */ };

especially since $.browser has been removed from jQuery 1.9+.

This should work for all IE8 minor versions

if ($.browser.msie  && parseInt($.browser.version, 10) === 8) {
  alert('IE8'); 
} else {
  alert('Non IE8');
}

-- update

Please note that $.browser is removed from jQuery 1.9

It is documented in jQuery API Documentation. Check for Internet Explorer with $.browser.msie and then check its version with $.browser.version.

UPDATE: $.browser removed in jQuery 1.9

The jQuery.browser() method has been deprecated since jQuery 1.3 and is removed in 1.9. If needed, it is available as part of the jQuery Migrate plugin. We recommend using feature detection with a library such as Modernizr.

Don't forget that you can also use HTML to detect IE8.

<!--[if IE 8]>
<script type="text/javascript">
    ie = 8;
</script>
<![endif]-->

Having that before all your scripts will let you just check the "ie" variable or whatever.

How do I detect IE 8 with jQuery?

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