javascript object prototype

　　 javascript--prototype Creation Object 2

To demonstrate that JavaScript is a thorough object-oriented language, it is necessary to start with the object-oriented concept and discuss several concepts of object-oriented: 1. everything is an object. objects are encapsulated and inherited. message Communication is used

Javascript's new is just a simulation of the class. This is why JavaScript classes are not classes in the industry-because they are simulated. In fact, the New Keyword of JavaScript only does five things. 1. Create an object2. Search for all the methods and attributes on the prototype of the class and copy them to the created

) this.width=650; "title=" Untitled. jpg "src=" http://s3.51cto.com/wyfs02/M00/6D/28/ Wkiom1vdefzzyfeeaafdskcrbam427.jpg "alt=" Wkiom1vdefzzyfeeaafdskcrbam427.jpg "/>In this case, the expert's advice is "the safest way is not to make any assumptions". As a result, we can extract the hasOwnProperty method in any secure location ahead of time, and take advantage of the lexical scope features of an immediately executed anonymous function to achieve the following solution:(function Testownproperty

Let's look at two phenomena first:1. Component Form declaration prototype (partial override), the prototype constructor is a host function instead of an object, just like adding properties directly to the host constructorfunction Dog () {this.tail = true;} New two dogs, note that at this time there is no definition prototypevar benji = new Dog (), var rusty = new

"; BASECLASS.PROTOTYPE.PUBLICMETHOD2=function() {alert ("PublicMethod2");} Baseclass.staticname= "Static"; Baseclass.staticmethod=function() {alert ("Staticmethod");} MyClass=function(){ varme =NewBaseClass (); Me.getname=function() { //cannot access the private properties and methods of the base classalert (privatename); Privatemethod (); } //define a public method for a subclassMe.othermethod =function() {alert ("Othermethod"); } returnme;}//Through

To demonstrate that JavaScript is a thorough object-oriented language, it is necessary to start with the object-oriented concept and discuss several concepts of object-oriented: 1. everything is an object. objects are encapsulated and inherited. message communication is used

, the constructor creates the object's method on the stage, using the method of the constructor, that is to solve the problem of repeated instantiation, and solve the problem of object recognition. The code is as follows.var box= new box (' Belle ', +); Alert (box instanceof box); Returns true, clearly recognizing that box is subordinate to boxThe constructor method is compared with the Factory mode method, the constructor method does not display the

prototype--prototypes for dynamically adding properties and behaviors to objectsFirst define a constructor functionSmall accessory function Gadget (name, color) {this.name = Name;this.color = Color;this.whatareyou = function () {return ' I am ' + this.co Lor + ' + this.name;} This.get = function (what) {return this[what];//object is similar to array, JS [] can be subscript or object's property}}Adding prope

Adding a new method to the built-in object using the prototype attribute in Javascript This example describes how to add a new method to a built-in object using the prototype attribute in Javascript. Share it with you for your ref