var gradeSelectList= new Array();


    
      function changegrade(subjectId,userId)
    {
          var e = document.getElementById("userId");
    
        // 初始化下拉列表 清空下拉数据    
    if(e!=null){
         e.length = 0;
        e.options[0] = new Option("--请选择年级--", "");
         
        var index=0;
      
        for (i = 0; i < gradeSelectList.length; i++)
        {
          
            if (gradeSelectList[i][2] == subjectId)
            {
            	
            	e.options.add(new Option(gradeSelectList[i][1], gradeSelectList[i][0]));
            	layui.use('form', function(){
					var form = layui.form();
					form.render();
				});
            	if(gradeSelectList[i][0]==userId)
            	{
            		index=e.length-1;
            	}
            	
            }
           
        }
        e.options[index].selected=true;
        		layui.use('form', function(){
					var form = layui.form();
					form.render();
				});
				}
		//修改专业下拉框选项，联动清空班级信息（联动跨级清空下拉框）
         var ebj = document.getElementById("auditFlag");
         if(ebj!=null){
         	ebj.length = 0;
	        ebj.options[0] = new Option("--请选择班级--", "");
	        ebj.options[0].selected=true;
         }
         
         
    }