输入查询条件，让grid数据刷新。怎么实现？
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@page contentType="text/html; charset=utf-8" %>
<%
String query = (String)request.getAttribute("query");
%>
<script type="text/javascript">
this.focus();
var gridmorebook;
var store2;
Ext.onReady(function(){
//创建http请求代理
var proxy=new Ext.data.HttpProxy( {url:'/rmbcs/xs03.op?method=salesList&query=<%=query%>'});
// 创建解析对象用于解析后台json数据格式
var reader = new Ext.data.JsonReader({
fields: [
{name: 'salesid',type:'string'},
{name: 'poser',type:'string'},
{name: 'netprice', type: 'string'},
{name: 'mrsaleprice', type: 'string'},
{name: 'amount', type: 'string'},
{name: 'scalar', type: 'string'},
{name: 'payway', type: 'string'},
{name: 'updatetime', type: 'string'}
]
});
//创建数据源
store2 = new Ext.data.Store({
proxy:proxy,
reader:reader
});
store2.load();
//创建表格，以store2为数据源来填充表格
gridmorebook = new Ext.grid.GridPanel({
//deferRowRender:false,
store: store2,
columns: [
{header: "销售单编号", width: 140, sortable: true, dataIndex: 'salesid',align:'center'},
// {id:'salesid',header: "销售单编号", width: 160, dataIndex: 'id',align:'center'},
{header: "收银员", width: 120, dataIndex: 'poser',align:'center'},
{header: "销售码洋", width: 100, dataIndex: 'netprice',align:'center'},
{header: "销售折扣", width: 120, dataIndex: 'mrsaleprice',align:'center'},
{header: "销售实洋", width: 100, dataIndex: 'amount',align:'right'},
{header: "销售数量", width: 100, dataIndex: 'scalar',align:'right'},
{header: "支付方式", width: 80, dataIndex: 'payway',align:'right'},
{header: "销售日期", width: 100, dataIndex: 'updatetime',align:'right'}
],
height:400,
width:860,
header: false
});
gridmorebook.render('gridDiv2');
});
function search(){
if(event.keyCode==13){//Enter
store2.reload();
}
}
