jQuery event binding management

Given the following elements:

<div class="container">
  <span class="some-class">content</span>
  ..n span repetitions..
</div>

Given the following .on()

$('.some-class').on('click', function () { ... });

If you redraw the .container with new span.some-class, will you leak the old events?

What I mean is, before the redraw, should you do:

$('.some-class').off('click');

Thanks!