When choosing link manually don't link to somewhere

The only no link I can add to it the button is a #.
See this topic: https://kriesi.at/support/topic/button-element-with-no-link-not-possible/

But if I add # as link it jumps to the top of the page when I click the button but I don’t want to.
When I set the link to manually it refreshes the page but I dont’ want to.
See the button ‘Meer info +’ on page in private content.

It is a normal button from the avia builder with class ‘.meer_info_portfolio’
This is the code in my functions:

function script_meerinfo(){ 
?>

<script>
jQuery(document).ready(function(){
 
	jQuery( ".meer_info_portfolio .avia-button" ).click(function() {
  jQuery( ".infoblokportfolio" ).toggleClass( "tonen" );
});
});

</script>
<?php 
}
add_action('wp_footer', 'script_meerinfo');