title: JQuery function still working after removeing the class
body: <p>I add and remove classes dynamicaly. But when I remove class the event still working. How to stop event to work.</p>
  
  <pre><code>$('.input').on('paste keypress, keydown', function(event) {
           fff();
  }) 
  </code></pre>
  
  <p>But as soon as I add the class I need it to work.</p>