Facebook Share Button for Dynamic Url

I have a dynamic page with rewrited url. I want to add a facebook share button in that. So users click on the share button can share the page. But the facebook share developer page is asking for a specific url. Not sure how to share dynamically generated url.

Here some code i found to capture the url. But I dont know, how to include this in facebook code.

jQuery(document).ready(function() {
    var href = jQuery(location).attr('href');
    var url = jQuery(this).attr('title');
    jQuery('#current_title').html(href);
    jQuery('#current_url').html(url);
});

HTML Part of the Facebook Share Button

<div class="fb-share-button" data-href="http://developers.facebook.com/docs/plugins/" data-type="button"></div>

---

Kindly help

Many Thanks

This worked for me:

<script language="javascript">
    function fbshareCurrentPage()
    {window.open("https://www.facebook.com/sharer/sharer.php?u="+encodeURIComponent(window.location.href)+"&t="+document.title, '', 
    'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=300,width=600');
    return false; }
</script>

Then call the code with a link:

<a href="javascript:fbshareCurrentPage()" target="_blank" alt="Share on Facebook">Facebook</a>

If you want it to be a direct link instead of opening in a window, use this in the function:

window.location.href="https://www.facebook.com/sharer/sharer.php?u="+encodeURIComponent(window.location.href)+"&t="+document.title;

Possible jquery solution:

<a class="fbsharelink" data-shareurl="YOURLINK">Facebook</a>

$('.fbsharelink').click( function() 
{
    var shareurl = $(this).data('shareurl');
    window.open('https://www.facebook.com/sharer/sharer.php?u='+escape(shareurl)+'&t='+document.title, '', 
    'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=300,width=600');
    return false;
});