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In JavaScript, we can say that everythingisobject, so what is an object? An object is a set of variables and functions. In other object-oriented languages, objects are instantiated by classes. JavaScript is a prototype-based
This article is translated from ScottAllenPrototypesandInheritanceinJavaScript, a Microsoft cool-man. This article gives a detailed analysis and explanation of Prototype and Prototype inheritance. It is one of the best works to understand JSOO.
I. Preface
This article is translated from Microsoft's cool man Scott Allen Prototypes and Inheritance in JavaScript. This article gives a detailed analysis on what Prototype is and why Prototype can be used
During the interview, you are always asked, what is your understanding of JavaScript object-oriented?Object-Oriented programming (Object-oriented Programming,oop) is a programming parad
In object-oriented languages, overloading is an important feature, while JavaScript, a self-proclaimed object-oriented language, does not directly provide overload functions. I have discussed the JavaScript
Interfaces are one of the most useful features in the object-oriented Javascript toolbox. As we all know, in the design mode, GOF says: interface-oriented programming, rather than implementation-oriented programming, is enough to show how important interfaces are in the
Sigh is to ease the seriousness of the atmosphere and lead to today's topic, "JavaScript object-oriented programming," Next, we are around the object-oriented several major keywords: encapsulation, inheritance, polymorphism, expand.
Encapsulation: The pattern of creating obj
Javascript is a flexible language that allows us to simulate many machine mechanisms in Object-Oriented Programming and fully use the object-oriented design idea in Javascript, this greatly improves code reuse, reduces inter-modul
This article takes the previous JavaScript object-oriented programming (1) Foundation.
As mentioned in the previous article, JavaScript does not have a class concept and needs to implement the definition of classes through functions. Let's take an example to illustrate:
Copy Code code as follows:
functi
JavaScript has been able to simulate object-oriented encapsulation and inheritance, but unfortunately JavaScript's support for polymorphic features is very weak! Other object-oriented language polymorphism is generally implemented by method overload and virtual method to ach
common objects that support overload functions.
Lang. Function (string name | object body) // defines the overloaded Function.
The Code is as follows:
Var lang = (function (){/***********************************Javascript object-oriented extension Library (lang. js v1.0)By: X! Ao_fQQ: 120000512Mail: xiao_f.mail # 1
The last few sections talk about JavaScript-oriented namespaces, JavaScript-oriented JavaScript classes, and JavaScript-oriented private members and public members, so you can look at t
The factory mode and constructor mode are introduced in javaScript object-oriented design and Javascript object-oriented design, as well as their advantages and disadvantages, today, we will continue to explain the prototype mode.
This section describes several key words about object-oriented: encapsulation, inheritance, and polymorphism. It expands JavaScript object-oriented key words about object-oriented: enca
We see how straightforward the concept of inheritance here is, "copy the prototype of a class to another class", OK, code is cheap, look at the codes:
function Class1 () {}
function Class2 () {}
Class2.prototype = Class1.prototype;
Class2.moreproperty1 = "Class 2 additional string";
Class2.moremethod1 = function () {alert (' Class 2 additional method ');}
/*
So, first of all, the CLASS2 has the same prototype as Class1, regardless of the constructor, two classes are equivalent.
Subsequently, th
Function is used to create functions or methods in javascript. To implement object-oriented programming, class is an indispensable role and the main character. However, javascript does not have the concept of a class. The so-called class is also simulated. The class members and Private Members are simulated through the
This section describes the private and public members of JavaScript. Although JavaScript does not have private and public keywords, it is still the same sentence-as developers, we need to have an object-oriented idea! The last two sections talk about the JavaScript
calling o. method (), we can see that the method defined on the parent class prototype will not inherit from the quilt class.
By calling o. method3 (), we can see that the instance methods defined in the subclass cannot access the private instance members defined in the parent class.
Finally, we can see from the results of the call to subClass. staticMethod () that static members will not be inherited.
Finally, this example does not show that multiple inheritance can be implemented by calling t
Examples of object encapsulation in JavaScript programming, and examples of javascript
1. prototype object1.1 constructor disadvantagesJavaScript generates new objects through constructors, so constructors can be considered as Object
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