我想将btn-primary类更改为btn-danger类：
<div class="toggle btn btn-primary" data-toggle="toggle" style="width: 56.7778px; height: 33.5556px;"><input type="checkbox" data-toggle="toggle" data-offstyle="danger" name="enrolled" id="datepassed" value="1">
<div class="toggle-group"><label class="btn btn-primary toggle-on">On</label><label class="btn btn-danger active toggle-off">Off</label><span class="toggle-handle btn btn-default active"></span></div>
</div>