I Recommend This - JS Fix

dot_irecommendthis.js

jQuery(document).ready(function($){

  $(document).on('click', '.dot-irecommendthis',function() {
    var link = $(this);
    if(link.hasClass('active')) return false;
    
    var id = $(this).attr('id'),
    	suffix = link.find('.dot-irecommendthis-suffix').text();
    
    $.post(dot_irecommendthis.ajaxurl, { action:'dot-irecommendthis', recommend_id:id, suffix:suffix }, function(data){
    	link.html(data).addClass('active').attr('title','You already recommended this');
    });
    
    return false;
  });

});