javascript object prototype

This article summarizes the definition, use, and object and prototype chain operations of objects in JavaScript. Share to everyone for your reference, specific as follows: 1. In addition to the 5 basic types, the rest of JS is the object (1) The definition of the object:

This article mainly introduces how to add a new method to the built-in object based on the prototype attribute implementation in Javascript, involving the use of prototype attributes in javascript, for more information about how to add a new method to a built-in

JavaScript uses prototype to define the object type (to) [From: JavaEye.com Prototype provides a JavaScript object-oriented infrastructure, which can be used for object-oriented progra

This article mainly introduces the sharing member attributes and methods of javascript object-oriented and the usage of prototype keywords. The example analyzes the principles and usage skills of prototype keywords in sharing member attributes and methods, for more information, see the examples in this article to descr

and Desk.In JavaScript, inherited functions are called supertype (parent class, base class, other language), and inherited functions are called subtypes (subclasses, derived classes). Inheritance also has previous problems, such as literal rewriting of a prototype that breaks relationships, uses a prototype of a reference type, and the subtype cannot pass parame

This article is from the "matengbing" blog, make sure to keep this source http://matengbing.blog.51cto.com/11395502/1879309JavaScript prototype object and instance object properties

. Here we create a new object and then assign the scope of the constructor to the new object, calling the method in the constructor.There seems to be nothing wrong with the way above, but we can see that the Saywhat method in the constructor called in two instances is not the same function instance:console.log(gf1.sayWhat == gf2.sayWhat); //false调用同一个方法，却声明了不同的实例，实在浪费资源。我们可以优化一下将sayWhat函数放到构造函数外面声明：function

) Code 1. var objectref = new Object (); Create a generic JavaScript object. Creates a new JS object, at which point the prototype of the object is null, so the OBJECTREF prototype c

() {}person.prototype ={name: ' Jiang ', aga:14,job: ' SF ', friend: [' s ', ' F '],sayname:function () {Console. Log (this.name);}} var p1 = new Person (), var p2 = new Person ();p 1.friend.push (' V '), Console.log (p1.friend);//"S", "F", "V" Console.log ( P2.friend);//"S", "F", "V"There is no friend in the P1 attribute, so the search into the prototype has the same name attribute, so the value added in P1 is essentially added to the properties of

;}return obj;}Let obj = Box (' Ha ', 24);Obj.run ();Inherited1. Inheritance is the core concept in object-oriented, ECMAScript only supports inheritance:function Parent () {this.name = ' P ';}function Child () {this.name = ' C ';}Inherits from the prototype chain, the object instance after the parent class is instantiated, and the

ECMAScript can recognize two types of objects: Native Object and Host Object, which are provided by the runtime environment, for example, document Object,Dom NodeNative objects is a loose structure and can dynamically add properties. All attributes have a name and a value. This value can be referenced by another object.Or the built-in data type (String, Number, B

JavaScript is not a pure object-oriented language, but an object-based language. Object Inheritance is inherited in the form of prototype functions, the following is a small example of writing an object-oriented programming model

is:Create a new object temp;Temp.constructor = Test;Temp. (base reference) = Test.prototype; This sentence is executed before the code body, meaning that the this.xxx in the constructor can access the properties of the prototype object xxxBind:this = temp; Binds this to the Temp objectStart executing function codevar dummy = "has money";This.wish = dummy; Add th

Douglas Crockford points out that JavaScript is the most misunderstood programming language in the world. Because JavaScript lacks common object-oriented concepts, many program apes believe that JavaScript is not a suitable language. When I was working on my first JavaScript

) {function F () {}; F.prototype=o; return new F (); box={Name: "Carl", Age:20, family:["elder brother", "elder sister", "brother"]};var box1 = obj (box), alert (box1.family); Box1.family.push ("Sister") ; alert (box1.family); var box2 = obj (box); alert (box2.family) ;*///Temporary transfer functionfunctionobj (o) {functionF () {}; F.prototype=o; return NewF ();}//Parasitic FunctionsfunctionCreate (box,desk) {varf=obj (box.prototype); F.constructor=desk;//adjusting the

prototypes Prototypes are important concepts in JavaScript object-oriented features and are too familiar concepts. Because in the vast majorityIn object-oriented languages, objects are class-based (for example, Java and C + +), and objects are the result of class instantiation. And inIn the JavaScript language, there i

plan to complete this note in the following order, for example: Java Program Ape's JavaScript Learning notes (concept) Java Program Ape's JavaScript Learning notes (2--property copy and inheritance) Java Program Ape's JavaScript Learning Note (3--this/call/apply) Java Program Ape's JavaScript Learning Note (4