ext中ArrayStore,JsonStore,XmlStore的用法

1.Store的用法

var _store = new Ext.data.Store();
   
    var _record = new Ext.data.Record(["name","sex"]);
   
    var _recordClone = new Ext.data.Record(["name","sex"]);
   
    _record.set('name','张翔');
   
    _record.set('sex','男');

  _store.add(_record);
 
  _recordClone.set('name','李慧敏');
   
    _recordClone.set('sex','女');
   
    _store.add(_recordClone);
   
    //alert(_store.getCount());
   
    //alert(_store.getAt(1).get('sex'));

2.ArrayStore的用法
var _store = new Ext.data.ArrayStore({
 
  data:[{name:'张翔',sex:'男'},{name:'李慧敏',sex:'女'}],
 
  fields:[{name:'name',mapping:'name'},{name:'sex',mapping:'sex'}]
  });
 
  alert(_store.getAt(1).get('sex'));
3.JsonStore的用法(和ArrayStore差不多，2.0版本之前 ArrayStore是JsonStore的子类)
var _store = new Ext.data.JsonStore({
 
  data:[{name:'张翔',sex:'男'},{name:'李慧敏',sex:'女'}],
 
  fields:[{name:'name',mapping:'name'},{name:'sex',mapping:'sex'}]
  });
  alert(_store.getAt(1).get('sex'));
4.XmlStore的用法
var _emp = Ext.data.Record.create([{name:'name',mapping:'name'},{name:'sex',mapping:'sex'}]);
  var _store = new Ext.data.XmlStore({
 
  url:'/store/xmlStore.xml',
 
  reader:new Ext.data.XmlReader({
  totalRecords:'xml',
  record:'emp',
  id:'id'
  },_emp)
  });
 
  _store.load();
 
  alert(_store.getCount());
 
  alert(_store.getAt(1).get('sex'));