构造函数模式

/***传统的创建对象***/

var person = new Object();

person.name = “lancer”;

person.age = 24;

person.job = “UI”;

person.sayName = function(){

alert(this.name);

}

person.sayName();

/***工厂模式***/

function createPerson(name,age,job){

var o = new Object();

o.name = name;

o.age = age;

o.job = job;

o.sayName = function(){

alert(o.name);

}

return o;

}

var person1 = createPerson(“lancer”,24,”UI”);

person1.sayName();

/***构造函数***/

function Person(name,age,job){

this.name = name;

this.age = age;

this.job =job;

this.sayName = function(){

alert(this.name)

}

}

var person1 = createPerson(“lancer”,24,”UI”);

person1.sayName();

/***原型模式***/

function Person(){

}

Person.prototype.name =”lancer”;

Person.prototype.age =24;

Person.prototype.job = “UI”;

Person.prototype.sayName = function(){

alert(this.name)

}

var person1 = new Person();

person1.sayName();

var person2 = new Person();

person2.name =”lara”

person2.sayName();

/***简单原型模式***/

function Person(){

}

Person.prototype = {

name : “lancer”,

age : 24,

job : “UI”,

sayName : function(){

alert(this.name)

}

};

var person1 = new Person();

person1.sayName();

/***构造函数和原型模式***/

function Person(name,age,job){

this.name = name;

this.age = age;

this.job =job;

}

Person.prototype = {

constructor :Person,

sayName : function(){

alert(this.name)

}

};

var person1 = new Person(“lancer”,”24″,”UI”);

person1.sayName();

/***动态原型模式***/

function Person(name,age,job){

this.name = name;

this.age = age;

this.job =job;

}

if(typeof this.sayName !=”function”){

Person.prototype = {

constructor :Person,

sayName : function(){

alert(this.name)

}

};

}

var person1 = new Person(“lancer”,”24″,”UI”);

person1.sayName();

/***稳妥构造函数***/

var Person = function(name,age,job){

var O = new Object();

O.sayName = function(){

alert(name);

};

return O

}

var person1 = Person(“lancer”,24,”UI”);

person1.sayName();