1.定义model的两种方式：

Ext.onReady(function () {

Ext.define("person",{

extend:"Ext.data.Model",

        fields:[

{name:'name',type:'auto'}

]

});

    var p=new person({

name:'aaaaa'

    });

    alert(p.get('name'))

})

2.

Ext.onReady(function () {

Ext.regModel("person",{

fields:[

{name:'name',type:'auto'}

]

});

var p=new person({

name:'test'

});

alert(p.get('name'))

})