如何让datagrid 第三列等于前两列相除

[Y青阳]

如何让绿化覆盖率=等于绿化覆盖面积除以总面积，急求大神帮助

[Y青阳]

function loadDatagrid(){
$('#road').datagrid({
fit:true,
metch:'post',
url:'GetRJGYLD.action',
pagination:true,
singleSelect:true,
fitColumns: true,
scrollbarSize:0,
pageSize:7,
pageList:[5,7,10,30,50],
columns:[[
//{field:'ck',checkbox:'true'},
{field:'tbh',title:'图斑号',width:75,align:'center'},
{field:'tbm',title:'图斑名',width:75,align:'center'},
{field:'lhfgmjms',title:'绿化覆盖面积',width:75,align:'right'},
{field:'zmjms',title:'总面积',width:75,align:'right'},
{field:'lhfglms',title:'绿化覆盖率',width:75,align:'right',formatter: function(value,row,index){return Math.round(row.lhfgmjms/row.zmjms);}},
]]
});

已解决