title: Add 'this' on plus-minus inputs via jQuery
body: <pre><code>&lt;form id='myform' method='POST' action='#'&gt;
      &lt;input type='button' value='-' class='qtyminus' field='quantity' /&gt;
      &lt;input type='text' name='quantity' value='0' class='qty' /&gt;
      &lt;input type='button' value='+' class='qtyplus' field='quantity' /&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>I have an input with plus and minus function on my Bootstrap site. Its called custom js and working fine. </p>
  
  <p>But If I have two inputs in one page, working together. However, it must be separate.</p>
  
  <p><a href="http://jsfiddle.net/puJ6G/2455/" rel="nofollow"><strong>DEMO</strong></a></p>
  
  <p>How can I fix it?</p>