Three simple methods of Javascript Object encapsulation

Use the keyword new to create an object

Js code

Function Person (name, age) {this. name = name; this. age = age;} var p = new Person (); // You can also fill in initialization attributes, such as new Person ("lingceng", 22)

Directly create an Object using an Object

It can be seen that this method is very convenient to expand.

Js code

Var obj = new Object (); // var ={}; obj. name = "lingceng"; obj. age = 22;

Create with JSON (object literal description is more accurate, but JSON is better understood)

Starting with Javascript1.2, you can create an object more quickly.

Js code

Var p = {name: "lingceng", // "name": "lingceng is resolved in the same way as quotation marks. gender:" male "};

Practice

It is suitable for practice to create objects in combination with constructors and prototype modes.

Js code

Function Person (name, age) {// instance attributes // Copy this multiple times during the instance. name = name; this. age = age;} Person. prototype = {// http://developer.51cto.com/art/200907/134913.htm // The constructor property always points to the constructor that created the current object // because the prototype is replaced, you need to restore the construtor's default point to constructor: Person, showName: function () {alert ("ShowName in prototype:" + this. name) ;}, showAge: function () {alert (this. age) ;}} var p = new Person ("lingceng", 22); p. showAge (); // 22