anchor.diff:                     name="email"
                      class="form-control form-register-control"
                      placeholder="Adres email"
  -                   value="${param.email}">
  +                   value="${fn:escapeXml(param.email)}">
   
               <% if (errors != null && errors.get("email") != null && errors.get("email").length() > 0) { %>
               <div id="email-error" class="alert alert-danger" role="alert"><%= errors.get("email") %></div>
  
positive.code: <%@ page import="java.util.Map" %>
  <%@ page contentType="text/html; charset=UTF-8" %>
  <% Boolean success = (Boolean) request.getAttribute("success"); %>
  <% Map<String, String> errors = (Map<String, String>) request.getAttribute("errors"); %>
  
  
negative.code:                    name="age"
                     class="form-control form-register-control"
                     placeholder="Wiek"
                     value="${fn:escapeXml(param.age)}">
  
              <% if (errors != null && errors.get("age") != null && errors.get("age").length() > 0) { %>
              <div id="age-error" class="alert alert-danger" role="alert"><%= errors.get("age") %></div>
  