无法使用jQuery刷新包含php代码的特定div

I am trying to reload some content present inside the div but it can not happen like this. I am explaining my code below.

space.php:

<?php
 require_once('header.php');
?>
<div>
    <a href="#">Update the div!</a>
</div>

header.php:

<div class="collapse navbar-collapse navmenu loadListSpaceDiv" id="bs-example-navbar-collapse-1">
<?php
  if(isset($_SESSION['vendor_id'])){ ?>
    <ul class="dropdown-menu dropdown-menu-right">
        <li><a href="<?php echo SITEURL.'vendor';?>">Dashboard</a></li>
        <li><a href="<?php echo SITEURL;?>signout">Sign Out</a></li>
    </ul>
<?php
}
?>
</div>

Here when user will click on anchor tag the above div element should refresh/reload. I am explaining my code below.

$(function() {
    $('a').click(function() {
        $(".loadListSpaceDiv").load(document.URL +  '.loadListSpaceDiv');
    });
});

But its not working as per expected. Here I need when user will click on that a tag the all div content will reload again.

If you'd wish to jQuery load() only a specific part of the source page, separate the CSS selector from the URL by a space:

$(".loadListSpaceDiv").load(document.URL +  ' .loadListSpaceDiv');