I'm trying to change the read more link on my wordpress post excerpts from a read more link to a button.

is this possible? if so how could I achieve this?

I'm using the

<?php the_excerpt(''); ?> 

and my function is

<?php // Changing excerpt more
   function new_excerpt_more($more) {
   global $post;
   return ' <br>ID) . '">' . 'Read More »' . '';
   }
   add_filter('excerpt_more', 'new_excerpt_more');
?>