prototype js tutorial

', ' football ']var p2 = new Person (' Mark ', 18); P2: ' Mark '; _proto_:18,[' running ', ' football '](2) Parasitic combined inheritancefunction Object (o) {function F () {}F.prototype = O;return new F ();}function Inheritprototype (person,mother) {var prototype = object (Mother.prototype);Prototype.constructor = person;Person.prototype = prototype;}function Mother (age) {This.age = age;This.hobby = [' R

I. Common objects and Function objectsIn JavaScript, everything is Object! But the object is also different. is divided into ordinary objects and function objects, object, function is JS comes with the functions of the object. The following examples illustrateFunction F1 () {};var F2 = function () {};var F3 = new Function (' str ', ' Console.log (str) ');var O3 = new F1 ();var O1 = {};var O2 =new Object ();Console.log (typeof Object); functionConsole.

Prototype is a JavaScript in the difficult to understand the contents of notes, the following through a few key points of knowledge to explain the prototype in JS. Please see the details below for specific content. 1 Prototype method design mode You can use Clone () in. NET to implement the

methodvar B = new BaseClass ();//Instantiate a BaseClassConsole.log (b,121212); The B object contains the properties and methods in the BaseClass constructor, does not contain properties and methods on the BaseClass prototype, and the properties and methods in the prototype are shared by all instances.The properties and methods in the prototype can be obtained f

Basic object-oriented JS explanation, factory mode, constructor mode, prototype mode, hybrid mode, dynamic prototype modeWhat Is Object-Oriented? Object-oriented is an idea! (Nonsense ). Object-oriented can regard all key modules in the program as objects, and the module has attributes and methods. In this way, if we encapsulate some attributes and methods, it wi

I. Common objects and Function objectsIn JavaScript, everything is Object! But the object is also different. is divided into ordinary objects and function objects, object, function is JS comes with the functions of the object.The following examples illustrate:functionF1 () {};varF2 =function(){}; varF3 =NewFunction (' str ', ' Console.log (str) '); varO3 =NewF1 ();varO1 = {}; varO2 =NewObject (); Console.log (typeofObject);//functionConsole.log (typeo

1. Prototype rulesA. All reference types (arrays, objects, functions) have object attributes and are free to extend properties;var arr = [];ARR.A = 1;B. All reference types (arrays, objects, functions) have a _proto_ attribute (implicit prototype), and the property value is an ordinary object;C. All functions have a prototype (explicit

Attached Source: http://hzjavaeyer.group.iteye.com/group/wiki/3086-JavaScript-core-conceptsFirst, the concept:Prototype object: A JavaScript object is a collection of properties and an implicit object: a Prototype object. The value of the prototype can be an object or null. In a generic engine implementation, the JS object contains several hidden properties, and

Class Prototype. js learning Prototype. as a successful open-source framework of javascript, js encapsulates a lot of useful functions. Although the official website does not provide any documentation, a lot of related documents are found on google, however, I still encountered some problems in the process of learning

This article mainly introduces the basic explanation of object-oriented JS, such as the factory mode, constructor mode, prototype mode, hybrid mode, and dynamic prototype. If you need it, What Is Object-Oriented? Object-oriented is an idea! (Nonsense ). Object-oriented can regard all key modules in the program as objects, and the module has attributes and method

After the process of creating the object and the new method is clear, it is much easier to understand the concept of the prototype.The purpose of the prototype exists in order to be more memory-efficient inheritance.I think the main thing in the prototype is to figure out what these 4 concepts are, what the explicit prototypes point to, what the implicit prototypes point to, what the constructor points to,

Examples of prototype usage in JS, and prototype instance analysis This example describes how to use prototype in JS. Share it with you for your reference. The specific analysis is as follows: Phototype in JS is a more difficult p

);//trueConsole.log ("-----Split Line-----"); Console.log ("P1.__proto__.constructor = = = Person:"); Console.log (P1.__proto__.constructor = = = person); Console.log ("-----Split Line-----"); Console.log ("p1.__proto__.__proto__="); Console.log (p1.__proto__.__proto__); Console.log ("p1.__proto__.__proto__ = = = Object.prototype:"); Console.log (p1.__proto__.__proto__ = = =Object. prototype);//trueConsole.log ("-----Split Line-----");5. Observe the f

This article mainly introduces the object-oriented JS basic explanation, Factory mode, structural function mode, prototype mode, mixed mode, dynamic prototype mode, the need for friends can refer to the nextWhat is object-oriented? Object oriented is an idea! (nonsense).Object-oriented can treat the key modules in the program as objects, while the modules have pr

' prototype object (prototype), you can easily extend some methods for some built-in objects, such as arrays to repeat Array.prototype.unique=function () { varres=[]; for (vari=0,len=this.length;iHowever, do not arbitrarily go to the built-in object above the extension method, in multi-person collaborative development, it is easy to produce coverage, as well as pollution.This article is from the "GHOSTW

' prototype object (prototype), you can easily extend some methods for some built-in objects, such as arrays to repeat Array.prototype.unique=function () { varres=[]; for (vari=0,len=this.length;iHowever, do not arbitrarily go to the built-in object above the extension method, in multi-person collaborative development, it is easy to produce coverage, as well as pollution.This article is from the "GHOSTW

Class Prototype. js learning Prototype. as a successful open-source framework of javascript, js encapsulates a lot of useful functions. Although the official website does not provide any documentation, a lot of related documents are found on google, however, I still encountered some problems in the process of learning

construction method, the reuse rate is almost 0Function superclass (name) { this.name = name; this.color= [' Red ', ' yellow '];}SuperClass.prototype.sayName = function () { return this.name;}function Subclass (Name,age) { Superclass.call (this,name); this.age = age;}Subclass.prototype = new superclass ();SubClass.prototype.sayAge = function () { return this.age;}var sub = new Subclass (' Eason ', 26);alert (Sub.color);Alert (Sub.sayname ());Alert (Sub.sayage ());4, there is a more common is th

This article mainly introduces the object-oriented JS basic explanation, Factory mode, structural function mode, prototype mode, mixed mode, dynamic prototype mode, the need for friends can refer to the nextWhat is object-oriented? Object oriented is an idea! (nonsense).Object-oriented can treat the key modules in the program as objects, while the modules have pr

implicit prototype __proto__ of the instance does not point to the overridden prototype object, so it cannot be calledAnother problem, if there is a reference type on the prototype object (prototype), be careful, because multiple instances share the prototype object, so lon