Show/Hide Multiple Divs with Jquery

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="buttons">
  <a id="showall">All</a>
  <a class="showSingle" target="1">Div 1</a>
  <a class="showSingle" target="2">Div 2</a>
  <a class="showSingle" target="3">Div 3</a>
  <a class="showSingle" target="4">Div 4</a>
</div>

<div id="div1" class="targetDiv">Lorum Ipsum1</div>
<div id="div2" class="targetDiv">Lorum Ipsum2</div>
<div id="div3" class="targetDiv">Lorum Ipsum3</div>
<div id="div4" class="targetDiv">Lorum Ipsum4</div>
jQuery(function() {
  jQuery('#showall').click(function() {
    jQuery('.targetDiv').show();
  });
  jQuery('.showSingle').click(function() {
    jQuery('.targetDiv').hide();
    jQuery('#div' + $(this).attr('target')).show();
  });
});