href match with links

I've got this pi开发者_如何学Cece of code, but i wanna fix it because the if statement if it's true it's empty... any ideas of how i can make it false always?

using ! inside the if it's not working

var $link = $(this).attr("href");
if ($link.match(/^(?:.*?\.)?(domain)\.net(?:\/.*)?$/))  {
}else {
    $(this).attr("href",'http://links.domain.net/?url='+$link);
}

This it's in jquery in this function

/* change_links */
(function($) {
    $.fn.change_links = function() {
        $('.post a:not([href^=mailto])').each(function() {
            var $link = $(this).attr("href");
            if ($link.match(/^(?:.*?\.)?(taringacs)\.net(?:\/.*)?$/))  {
            }else {
                $(this).attr("href",'http://links.taringacs.net/?url='+$link);
            }
        });
    }
})(jQuery);

thanks in advance

Use RegExp.test

/* change_links */
(function($) {
    $.fn.change_links = function() {

        $('.post a:not([href^=mailto])').each(function() {
            var $link = $(this).attr("href");

            if (! /^(?:.*?\.)?(taringacs)\.net(?:\/.*)?$/.test($link))  {
                $(this).attr("href",'http://links.taringacs.net/?url='+$link);
            }

        });

    }

})(jQuery);

The match() method returns an array of matches, you'll have to check its length.

if ($link.match(/^(?:.*?\.)?(domain)\.net(?:\/.*)?$/).length == 0)  {
    $(this).attr("href",'http://links.domain.net/?url='+$link);
}