js设置datagriad的行移动

   //                    ,
//                formatter: function(value,row,index){
//                    var download = row.priority+
//                        "&nbsp;&nbsp;&nbsp;<a href="#" id = "V_up_"+index+"" class="easyui-linkbutton" data-options="iconCls:'icon-add'" onclick=moveUp(this,"
//                                + index+ ","+row.priority+","+row.id+")>上移</a>"
//                                 +"<a href="#" id = "V_down_"+index+"" class="easyui-linkbutton" data-options="iconCls:'icon-add'" onclick=movedown(this,"
//                                + index+ ")>下移</a>";
//                    return download;
//                    } 
 function moveUp(value, index, priority,id) {
            var $tr = $(value).parents("tr");
            if ($tr.index() != 0) {
                $tr.fadeOut().fadeIn();
                $tr.prev().before($tr);
            }
            var columns = $('#dataGrid').datagrid("options").columns;
            // 得到rows对象
            var rows = $('#dataGrid').datagrid("getRows"); // 这段代码是// 对某个单元格赋值
            var changeRows = "";
            var beichangeRows ="";
            if(index == 0){
                beichangeRows = 2;
                changeRows = 1;
            }else{
                changeRows = rows[index-1].priority;
                beichangeRows = priority;
            }
            //进入后台更新优先级
            updatePriority(rows[index].id+"@"+changeRows,rows[index-1].id+"@"+beichangeRows);
    }
    
    function movedown(value, index,row) {
         var len = value.length;
         var $tr = $(value).parents("tr");
            if ($tr.index() != len - 1) {
                $tr.fadeOut().fadeIn();
                $tr.next().after($tr);
        }
            var columns = $('#dataGrid').datagrid("options").columns;
            // 得到rows对象
            var rows = $('#dataGrid').datagrid("getRows"); // 这段代码是// 对某个单元格赋值
            var changeRows = "";
            var beichangeRows ="";
            if(index == len - 1){
                beichangeRows =rows[index].priority;
                changeRows = rows[index+1].priority;;
                updatePriority(rows[index].id+"@"+changeRows,rows[index+1].id+"@"+beichangeRows);  
            }
    }



    /**
     * 更新优先级
     * @param changeRows
     * @param beichangeRows
     */
    
    function updatePriority(changeRows,beichangeRows){
         $.ajax({
                url: '../productConfig/updatePriority',
                data: {"changeRows":changeRows,"beichangeRows":beichangeRows}, 
                type: 'post',
                dataType: 'json',
                success: function(r) {
                     $('#dataGrid').datagrid("reolad")
                }
            });
    }