如何在jqGrid中快速加载数据 [英] How to quickly load data in jqGrid

问题描述

问题是在jqgrid中加载数据需要很多时间，目前我正在使用

The problem is loading data in jqgrid takes a lot of time, currently I am using

for(var i=0;i<homeFileList.length;i++)
        jQuery("#tblHomeFileList").jqGrid('addRowData',i+1,homeFileList[i]);

要将数据加载到网格中，但是由于要进行迭代，因此要花费大量时间，是否有任何方法可以更快地加载数据?

to load data into the grid, but since it is iterating, it is taking a lot of time, is there any way to load data faster?

我阅读了addRowData甚至可以一次插入多个数据(阅读Link )，我认为它可能会更快，但它不会在网格中插入任何内容

I read the addRowData can even insert multiple data at once (Reading Link), i thought it might be faster, but it does not insert anything to my grid

请参阅下面的代码.

var homeFileList=[];
$(xml).find('IPC').each(function(){ 
    $(this).children('homefilelist').each(function(){ 
        $(this).children('homefilelist_info').each(function(){ 
            var row={};
            isPresent=true;
            row.permission=$(this).attr('permission');
            row.hardlink=$(this).attr('hardlink');
            row.owner=$(this).attr('owner');
            row.group=$(this).attr('group');
            row.fsize=$(this).attr('fsize');
            row.month=$(this).attr('month');
            row.date=$(this).attr('date');
            row.time=$(this).attr('time');
            row.filename=$(this).attr('filename');
            homeFileList.push(row);
        });
    });
});

在Oleg评论后更新

//HomeFileList
if(homeFileList.length>0)
{
    jQuery("#tblHomeFileList").jqGrid({
        datatype: "clientSide",
        colNames:['Permission','Hardlink','Owner','Group','Size','Month','Date','Year/Time','Filename'],
        colModel:[
            {name:'permission',index:'permission', align:"left",width:"100px"}, 
            {name:'hardlink',index:'hardlink', align:"left", width:"80px"},
            {name:'owner',index:'owner', align:"left",width:"100px"},
            {name:'group',index:'group', align:"left"},
            {name:'fsize',index:'fsize', align:"left", width:"90px"},
            {name:'month',index:'month', align:"left",width:"100px"},   
            {name:'date',index:'date', align:"left", width:"80px"},
            {name:'time',index:'time', align:"left",width:"100px"},
            {name:'filename',index:'filename', align:"left"}
        ],

                    pager : '#HomeFileListGridpager',
        rowNum:10,
        rowList:[10,50,100],
        scrollOffset:0,
        height: 'auto',
        autowidth:true,
        viewrecords: true,
        gridview: true
            });

    /*This for loop loads my data from homeFileList into grid
for(var i=0;i<homeFileList.length;i++)
        jQuery("#tblHomeFileList").jqGrid('addRowData',i+1,homeFileList[i]);*/

    alert($.isArray(homeFileList)); //returns true


    jQuery("#tblHomeFileList").jqGrid('addRowData',homeFileList);


    jQuery("#tblHomeFileList").setGridParam({rowNum:10}).trigger("reloadGrid");
}
else
    gridUnavailable("#tblHomeFileList");

XML响应(我在下面缩短了xml，因为它是homefilelist中的巨大数据)

XML response (I have cut short the xml below, as it is huge data inside homefilelist)

<?xml-stylesheet type="text/xsl" href="client9.xsl"?><client version="1.0"><IPC>
<homefilelist>
    <homefilelist_info permission='-rwxr-xr-x' hardlink='1' owner='asimon' group='support' fsize='61597' month='Mar' date='22' time='2011' filename='libpmwspsvrcmn.so' />
    <homefilelist_info permission='-rwxr-xr-x' hardlink='1' owner='asimon' group='support' fsize='21778' month='Mar' date='22' time='2011' filename='libpmorablk.so' />
    <homefilelist_info permission='-rwxr-xr-x' hardlink='1' owner='asimon' group='support' fsize='36226' month='Mar' date='22' time='2011' filename='libpmjvm.so' />
</homefilelist>
</IPC>
</client>

推荐答案

您可以使用jqGrid的data参数:

You can use data parameter of jqGrid:

$("#tblHomeFileList").jqGrid({
    datatype: "local",
    data: homeFileList,
    ...
});

请参见演示.在这种情况下，网格的整个数据将被放置在网格中，并且第一页将被绘制.我相信您会立即看到大量行的性能差异.

See the demo. In the case the whole data of the grid will be placed in the grid and the first page will be paint. I am sure that you will see the difference in the performance for large number of rows immediately.

我建议您在网格中另外包含formatter和sorttype属性.例如，保存整数数据的'fsize'的定义可以如下:

I recommend you additionally include formatter and sorttype attributes in the grid. For example the definition of 'fsize' which hold integer data can be the following:

{name: 'fsize', index: 'fsize', width: 90, formatter: 'integer', sorttype: 'int'}

这篇关于如何在jqGrid中快速加载数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！