title: TypeError: jQuery(...).on is not a function
body: <p>Guys I have this function from a wordpress plugin:</p>
  
  <pre><code>jQuery( '#widget-twitter-__i__-username' ).on( 'change', function() {
    jQuery('#widget-twitter-__i__-list' ).val(0);
  });
  
  jQuery( '#widget-twitter-__i__-list' ).on( 'change', function() {
    jQuery('#widget-twitter-__i__-username' ).val(0);
  });
  </code></pre>
  
  <p>The error I am getting is:</p>
  
  <pre><code>TypeError: jQuery(...).on is not a function
  </code></pre>
  
  <p>When I click that error on the error console, I get to the above code.</p>
  
  <p>And I was wondering what would be the way to address this issue.</p>