extjs面向对象设计

Ext.namespace('Ext.practise');
//给person类添加了name属性，并赋值
Ext.apply(Ext.practise.Person.prototype,{
 name : 'a'
});
//{}表示一个类
//[]表示一个数组

//类的实例方法
Ext.apply(Ext.practise.Person.prototype,{
 name : 'a',
 sex : 'b',
 print : function(){
  alert(String.format("姓名:{0},性别:{1}",this.name,this.sex));
 }
});
var person = new Ext.practise.Person();
person.name = "a";
person.sex = "b";
person.print();

//类的静态方法
Ext.practise.Peron.print = function(_name,_sex){
 var person = new Ext.practise.Peron();
 person.name = _name;
 person.sex = _sex;
 person.print();
};

//构造方法
Ext.practise.Peron = function(_cfg){
 Ext.apply(this,_cfg);
};
Ext.practise.Peron = function(_name,_sex){
 var person = new Ext.practise.Peron({name : _name,sex : _sex});
 person.print();
};
Ext.apply(Ext.practise.Peron.prototype,{
 print : function(){
  alert(String.format("姓名:{0},性别:{1}",this.name,this.sex));  
 }
});

var p = new Ext.practise.Peron({name : "a",sex:"b"});
p.print();

//类继承
Ext.practise.Peron = function(_cfg){//_cfg父类
 Ext.apply(this,_cfg);
};
Ext.apply(Ext.practise.Peron.prototype,{
 job : "worker",
 print : function(){
  alert("name:{0},sex:{1},job:{2}",this.name,this.sex,this.job);
 }
});

Ext.practise.man = function(_cfg){//子类
 Ext.apply(this,_cfg);
};

Ext.extend(Ext.practise.man,Ext.practise.Peron,{job:"teacher"});

//类重写
Ext.extend(Ext.practise.man,Ext.practise.Peron,{
 print : function(){
  alert("man覆盖了person的方法");
 }
});