$detaildatagrid.datagrid({
 			    onBeginEdit:function(rowIndex, rowData){
 			    	console.log('onBeginEdit');
 			        var uniteditor = $detaildatagrid.datagrid('getEditor', {'index':rowIndex,'field':'unit_multi_id'});
 			        if(null != uniteditor){
 			        	var goodsid = typeof(rowData['goods_id_val'])=='undefined'?0:rowData['goods_id_val'];
 			        	goodsid = goodsid==''?0:goodsid;
 			        	var obj = $(uniteditor.target).eovacombo({url: unit_multi_url+'?exp=selectGoodsUnitByGoodsId,'+goodsid});
 			        	setTimeout(function() {
 			        		obj.reload();
 						}, 500);
 			        }
 			        console.log(uniteditor);
 			    }
 });
 之前实现的方案存在问题，经过不断的踩坑后，目前这样写效果还可以接受

@非对即错 你这样用户能感受到延迟哦

@在路上 不延迟下combo默认的加载json会在后面才返回，导致动态设置的url先加载的数据被覆盖

@非对即错 大约延迟100-200 就可以了