小编Vin*_*ent的帖子

$(document).ready(function() {
  $('label.btn').click(function(e) {
    if ($(this).hasClass('active')) {
      $(this).removeClass('active');
    }
  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

<div id="note_reactivity" class="btn-group notes" data-toggle="buttons">
  <label id="1" class="btn btn-primary">
    <input type="radio">1
  </label>
  <label id="2" class="btn btn-primary">
    <input type="radio">2
  </label>
  <label id="3" class="btn btn-primary">
    <input type="radio">3
  </label>
  <label id="4" class="btn btn-primary">
    <input type="radio">4
  </label>
</div>