要实现中文排序的功能，需要重写Ext.data.Store的applySort函数，可以把它放在ext-all.js文件的最后，或者是放到HTML页面的最上面，要在ExtJS初始化之后，实际代码调用之前执行，这样重写的方法才能起作用，中文排序也就实现了。完整的实现代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>解决中文排序问题</title>
<link rel="stylesheet" type="text/css" href="../ext-3.4.0/resources/css/ext-all.css"></link>
<script type="text/javascript" src="../ext-3.4.0/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../ext-3.4.0/ext-all.js"></script>
<script type="text/javascript">
Ext.data.Store.prototype.applySort=function(){//重载applySort
if(this.sortInfo && !this.remoteSort){
var s = this.sortInfo, f=s.field;
var st=this.fields.get(f).sortType;
var fn=function(r1,r2){
var v1=st(r1.data[f]),v2=st(r2.data[f]);
//添加：修复汉字排序异常的Bug
if(typeof(v1)=="string"){//若为字符串
return v1.localeCompare(v2);//则localeCompare比较汉字字符串，Firefox与IE均支持
}//添加结束
return v1>v2 ? 1 : (v1<v2 ? -1 : 0);
};
this.data.sort(s.direction,fn);
if(this.snapshot && this.snapshot!=this.data){
this.snapshot.sort(s.direction,fn);
}
}
};
</script>
<script type="text/javascript">
Ext.onReady(function(){
var cum = new Ext.grid.ColumnModel([
{header:"项目ID",dataIndex:'project_id'},
{header:"项目名称",dataIndex:'project_name'},
{header:"部门",dataIndex:'project_dept_no'},
{header:"项目经理",dataIndex:'project_manager'},
{header:"开发经理",dataIndex:'project_leader'}
]);
var cumdata=[
['1','教学管理系统','001','李润','田成功'],
['2','留言系统','002','光明','周爱卿'],
['3','图书管理系统','008','毛小强','黄岩'],
['4','校信通','003','王磊','郭强']
];
var store=new Ext.data.Store({
proxy:new Ext.data.MemoryProxy(cumdata),
reader:new Ext.data.ArrayReader({},[
{name:'project_id'},
{name:'project_name'},
{name:'project_dept_no'},
{name:'project_manager'},
{name:'project_leader'}
]),
sortInfo:{field:'project_name',direction:'ASC'}//设置project_name字段，按升序排列
});
store.load();
var cumgrid =new Ext.grid.GridPanel({
renderTo:'cumGrid',
store:store,
height:200,
width:500,
colModel:cum
});
});
</script>
</head>
<body>
<div id="cumGrid"></div>
</body>
</html>
原文地址 ：http://blog.sina.com.cn/s/blog_62276c5a01015ah8.html
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