当我尝试使用GET时，Js Active链接无法在php中工作

I have used js for active link,this is working fine for below line

<a href="http://www.google.com" class="list-group-item menu cp_btns" target="blank" ><?php echo $row['title']; ?></a>

But for this below line this is working only for loading time, after load the page it's not working.

<a href="index.php?U=<?php echo $row['title']; ?>" class="list-group-item menu cp_btns" ><?php echo $row['title']; ?></a>

Here my URL is index.php?U=Google

I have used this js code here

<script>
    $(document).ready(function(){
            $('a.cp_btns').click(function(){
            $('a.cp_btns.active').removeClass("active");
            $(this).addClass("active");
             });
            });
</script>

Have there any solution to fix this problem ?