title: How to get first span from bottom value locate any where in the above div on checkbox click
body: <pre><code>&lt;div id="demo"&gt;here is multplie span inside may be many other tags but fetch latst span text/value&lt;/div&gt;
  &lt;div id="testing"&gt;&lt;input type="checkbox" id="demo_id"&gt;Click me&lt;/div&gt;
  </code></pre>