js常用设计模式

时间:2021-01-30 15:30:47

组合使用构造函数模式和原型模式。其中,构造函数模式用于定义实例属性,而原型模式用于定义方法和共享属性。

例子:

    <script>
function Person(name,age,job){
this.name = name;
this.age = age;
this.job = job;
this.friends = ["jie","fei"]; } // Person.prototype = {
// constructor : Person,
// sayName : function(){
// alert(this.name);
// }
// }
Person.prototype.sayName = function(){
alert(this.name);
}
var person1 = new Person("jie",24,"web");
var person2 = new Person("fei",24,"teacher"); person1.friends.push("wang");
alert(person1.friends);
alert(person2.friends);
alert(person1.friends == person2.friends);
alert(person1.sayName == person2.sayName);
</script>