title: Need to get is any child inside an element is having a background
body: <p>I need to find out is their any span having a style of background so I can get value from its attribute I have $(this). Structure is:</p>
  
  <pre><code>&lt;div id="operative_time_limit" class="timedivd"&gt;
  &lt;span title="1 hours" data-y="1" data-x="0"&gt;&lt;/span&gt;
  &lt;span title="2 hours" data-y="2" data-x="0"&gt;&lt;/span&gt;
  &lt;span title="3 hours" data-y="3" data-x="0"&gt;&lt;/span&gt;
  &lt;span title="4 hours" data-y="4" data-x="0"&gt;&lt;/span&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Using <code>alert(jQuery(this).children().css('background').length);</code> but always getting 0 as result</p>