regex value is not matching jquery

I am trying to match clicked linked path with other links. It does not work at all. Here's the code. I need to link's href starts with the regex.

 $('#taxonomylist ul li a').click(function() {
        $href = $(this).attr("href");
        $regex = new RegExp("^"+$href);
        $('#taxonomylist ul li').each(function() {
        $href_sub = $("a", this).attr("href");
        if ($href_sub.match($regex))
        {
        $(this).css("display", "block");
        }

       });
       return false;
        });

Here's what I got in firebug:

$href = "/?q=category/activity/test"  
$href_sub = "/?q=category/activity/test/lamp"  
$regex = /^\/?q=category\/activity\/test/  

Everything seems find, but it does n开发者_运维问答ot work as expected. If I remove matching by regex, everything works fine (without filtering, of course).

EDIT:

Now it partially works, only assign css property to all links, not only those that match value. Does anyone see the problem?

$('#taxonomylist ul li a').click(function() {
$href = $(this).attr("href");
$regex = new RegExp("^"+$href);
$('#taxonomylist ul li').each(function() {
$href_sub = $("a", this).attr("href");
if ('$href_sub:contains($href)')
{
$(this).css("display", "block");
}

});
return false;
});

Because you're asking if the regex matches your string. Meaning, your regex should at least look like this (based on your example):

$regex = /^\/?q=category\/activity\/test\/\w+/

You might want to use :contains() selector instead.

check this

use indexOf(//value to search) for matching

hope it helps