html jquery li标签 选中

$('.j-d-list').find($('li[data-m="2017-10"]'))
  var current=$("#diss").find($("dd[class='current']"));
  
  
  ----------------------------------------------------------------------------------------
  
  class="current"
  
   var current=$("#workplaceSelect").find($("a[class='current']"));
         alert(current); alert(current.attr("districtId"));
		 //选中一个，移除其它。始终就一个选中 <ul> <li class="current"> </li>  <li> </li>  </ul>
		 this.addClass('current').siblings().removeClass("current");
		 
		 $('.j-d-list').find($('li[data-m="'+switchMonth+'"]')).removeClass('on').addClass('off').find('i').text('');
		 
		 
		 $("#workplaceSelect a").each(function(){$(this).attr("class","")});
		 
		 
--------------------------jquery-------以下调试ok代码--------------当前操作a标签加样式 选中状态 -----------------------------------------		 
		   
		   html代码
		   
		   <ul id="workplaceSelect">
<li  >
  <a href="#"  districtId='1' onclick="goPage(this,1)" > 1<i>预约</i>  </a>
</li>
<li  >

<a href="#"  districtId='2' onclick="goPage(this,2)" > 2<i>预约</i>  </a>

</li>
<li >
<a href="#"  districtId='3' onclick="goPage(this,3)" >
3<i>预约</i></li>   </a>

</ul>



		 <javascript>
		   //获得点击选中的 属性 districtId 值 
		  function goPage(data,type){
         //alert($(data).attr("districtId"));
		  //设置所有workplaceSelect 下的 a标签 class为""  ,不选中状态
          $("#workplaceSelect a").each(function(){$(this).attr("class","")});
		  //当前点击a标签加class="current"
         $(data).addClass('current').siblings().removeClass("current");
        // $(data).attr('class','current');//.siblings().removeClass("current");
		 //获得当前选中 workplaceSelect a标签current属性上的districtId 值
         var current=$("#workplaceSelect").find($("a[class='current']"));
         alert(current); alert(current.attr("districtId"));
		var districtId =current.attr("districtId");
        // alert(id);
        // window.location.href='http://localhost:8080/positionInfoAndCompany/list?districtId='+districtId;
		
		   }
		   
		  </javascript>