一、认识面向对象
1.面向对象中的概念:
(1)一切事物皆对象
(2)对象具有封装和继承特性
(3)信息隐藏
二、JS面向对象
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(
function
(){
var
n =
"yelven2"
function
Person(name){
var
_this = {}
_this._name = name;
_this.sayHello =
function
(){
alert(
"PHello"
+_this._name+n);
}
return
_this;
}
window.Person = Person;
}());
function
Teacher(name){
var
_this = Person(name);
var
superSay = _this.sayHello;
_this.sayHello =
function
(){
superSay.call(_this);
alert(
"THello"
+_this._name);
}
return
_this;
}
var
t = Teacher(
"yeleven"
);
t.sayHello();
|
本文转自yeleven 51CTO博客,原文链接:http://blog.51cto.com/11317783/1794385