<div class="ui dropdown item" id="region">

              <div class="text">区域</div>

              <i class="dropdown icon"></i>

              <div class="menu">

                  <div class="item" data-value="1">荆州区</div>

                  <div class="item" data-value="2">沙市区</div>

                  <div class="item" data-value="3">开发区</div>

              </div>

           </div>

$("#region").dropdown({

        onChange:function(a,b){

            alert(a+"="+b);

        }

    });