problem with share in a .pug file

I have a problem with the share button on my website with the .pug file I created a script as follows:

script(type='text/javascript').
        //Funciones para compartir en redes sociales
        function share_fb(url, title_share,  width,height){
            var position_x;
            var position_y;
            position_x = (screen.width / 2) - (width / 2);
            position_y = (screen.height / 2) - (height / 2);
            window.open('https://www.facebook.com/sharer.php?u='+url+'&t='+title_share, title_share, "width="+width+",height="+height+",menubar=0,toolbar=0,directories=0,scrollbars=no,resizable=no,left="+position_x+",top="+position_y+"");
            console.log(url, title_share)
        }

and the .pug file is this shows me the sharing window but not the post data I want to share

.col-md-1.text-center
  a(href='javascript:void(0)' title=data.post.title.heading onclick="share_fb('#{data.fb.url}', '#{data.post.social_network}', 650, 450)")
     img(src=template_url+'/images/facebookicon.svg' width="22px" height="22px" title='Compartir en Facebook ' + data.post.title.heading alt='Compartir en Facebook ' + data.post.title.heading)

Someone will know that I am doing wrong in the code, I have tried it with the .jade if it works but with .pug it does not work for me ........

and this is the image that throws at me