关于给javascript对象添加、删除、修改对象的属性

以下是自己总结的几种方法

• 利用动态特性

 1             function Person(){};
 2             var person = new Person();
 3             person.name = \'yy\';
 4             person.gender = \'girl\';
 5             console.log(person.name+\',\'+person.gender);//yy,girl
 6             delete person.name;//删除属性
 7             console.log(person.name);//undefined
 8 //            变式
 9             function Person(){};
10             var person = new Person();
11             person[\'name\'] = \'yy\';
12             person[\'gender\'] = \'girl\';
13             console.log(person.name+\',\'+person.gender);//yy,girl
14             delete person.name;//删除属性
15             console.log(person.name);//undefined                    

 

• 构造函数中this

var Person = function (){
                this.name = \'yy\';
                this.gender = \'girl\'
            };
            var person = new Person();
            console.log(person.name+\',\'+person.gender);//yy,girl

 

• 原型中添加属性

var Person = function (){    
            };
            Person.prototype.name = \'yy\';
            Person.prototype.gender = \'girl\';
            var person = new Person();
            console.log(person.name+\',\'+person.gender);//yy,girl
            console.log(person[\'name\']+\',\'+person[\'gender\']);//yy,girl

• 字面量添加属性

var person = {    
            };
            person.name = \'yy\';
            person.gender = \'girl\';
            console.log(person.name+\',\'+person.gender);//yy,girl
            console.log(person[\'name\']+\',\'+person[\'gender\']);//yy,girl
//            另一种写法
            var person = {
                name: \'yy\',
                gender: \'girl\'
            };
            console.log(person.name+\',\'+person.gender);//yy,girl
            console.log(person[\'name\']+\',\'+person[\'gender\']);//yy,girl

• 封装extend方法

var p1 = {};
            var p2 = {name:\'yy\',gender:\'girl\'};
            p1.extend = function(obj){
                for(var k in obj){
                    this[k] = obj[k];
                }
            }
            p1.extend(p2);
            console.log(p1.name+\',\'+p1.gender);//yy,girl
            console.log(p1[\'name\']+\',\'+p1[\'gender\']);//yy,girl

•  在此列举了几种对象添加属性的方法，那么对象添加方法也就照猫画虎了

本文较短，如果有什么建议，多多交流，原创文章，文笔有限，才疏学浅，文中若有不正之处，万望告知，不胜感激！