I have 2 html files x and y.html. And I try 2 different ways to solve this problem:How I include html files wihout iframe and javascript?
it is menu file y. html
<!--sidebar start-->
    <aside>
    <div id="sidebar" class="nav-collapse">
    <!-- sidebar menu start-->
    <div class="leftside-navigation">
        <ul class="sidebar-menu" id="nav-accordion">
            <li>
                <a class="active" href="index.html">
                    <i class="fa fa-dashboard"></i>
                    <span>Home</span>
                </a>
            </li>
            <li class="sub-menu">
                <a href="javascript:;">
                    <i class="fa fa-tasks"></i>
                    <span>Lists</span>
                </a>
                <ul class="sub">
                    <li><a href="form_component.html">Shopping List</a></li>
                    <li><a href="advanced_form.html">To-Do List</a></li>
                </ul>
            </li>
            <li class="sub-menu">
            <a href="profile.html">
                <i class="fa fa-glass"></i>
                <span>Profil</span>
            </a>
        </li>
      <!-- sidebar menu end-->
  </div>
</aside>
<!--sidebar end-->
an it is main index page x.html
    <!--sidebar start-->
<aside>
    <div id="sidebar" class="nav-collapse">
        <!-- sidebar menu start-->
               <!-- MENU SHOULD BE HERE-->  
        <!-- sidebar menu end-->
    </div>
</aside>
 
    