给一组标签设置状态

      <div class="field required">
        <label class="required">标签</label>
        <a class="ui teal tag label">Windows</a>
        <a class="ui red tag label">Linux</a>
        <a class="ui blue tag label">Mobile</a>
        <a class="ui yellow tag label">C/C++</a>
        <a class="ui green tag label">Qt</a>
        <a class="ui purple tag label">Node.js</a>
        <a class="ui black tag label">Web</a>
      </div>

  $(".tag.label").on("click", function() {
    if ($(this).hasClass('active')) {
      $(this).removeClass('active');
    } else {
      $(this).addClass('active');
    }
  });