CSS: How to remove pseudo elements (after, before,...)?

p:after {
   content: none;
}

none is the official value to set the content, if specified, to nothing.

http://www.w3schools.com/cssref/pr_gen_content.asp

You need to add a css rule that removes the after content (through a class)..

An update due to some valid comments.

The more correct way to completely remove/disable the :after rule is to use

p.no-after:after{content:none;}

as Gillian Lo Wong answered.

Original answer

You need to add a css rule that removes the after content (through a class)..

p.no-after:after{content:"";}

and add that class to your p when you want to with this line

$('p').addClass('no-after'); // replace the p selector with what you need...

a working example at : http://www.jsfiddle.net/G2czw/

$('p:after').css('display','none');

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