title: How to set variable in jsp using jstl from input tag on same page?
body: <p>I want to do something like</p>
  
  <pre><code>&lt;from action="#"&gt;
      &lt;input type="number" name="id1"&gt;
      .......
  &lt;form&gt;
  &lt;c:set var="quantity" value="//value from input field here"/&gt;
  </code></pre>
  
  <p>Is it possible?<br>
  Note: whole code is a single jsp file </p>