javascript inheritance example

I have been learning Javascript recently. I plan to write some articles and write my own learning experience. It can be considered a learning note. I don't want to write anything without system knowledge. I mainly want to write something that I think is valuable. Is Javascript an object-oriented language or an object-supporting language, I think everyone has their own opinions. Fans who are loyal to

In the first two articles, we introduced constructor inheritance and prototype inheritance. Today, I have written the remaining two types of applications. These two types of applications have very few applications compared with the first two. Therefore, I call them a non-mainstream inheritance method. First of all, let's look at the non-mainstream

The example of this article introduces the 6 kinds of ways that JavaScript can inherit, and share them for everyone's reference, the specific contents are as follows 1, the essence of the implementation of "prototype chain inheritance" is to rewrite the prototype object and replace it with a new type of instance. The constructor attribute of the prototype that i

chain: Each JavaScript Object inherits a prototype chain, and all prototype ends with Object. prototype. Note that this inheritance is an inheritance between active objects. It is different from the common concept of inheritance. The latter refers to the inheritance between

JavaScript allows us to add or replace methods for an existing class. We can call the method at any time. We can extend a class at any time. Inheritance is not the way. So we call this a "class extension" to avoid the extends── of Java, but not the same thing--confusing. Object extension In static object-oriented languages, if you want one object to be different from another, you must create a new class. B

JavaScript implements a hybrid method of inheritance, and javascript inherits The simplest way to implement JavaScript inheritance is the call method (or the apply method) and the prototype chain method. However, both methods have defects, and their mixture is a good

opposition is non-black and white. For example, the picture on the right is D.C himself, the old man, as the saying goes, the old man knows the Road, huh, huh. D.C mainly means that the academic discussion of prototype inheritance has always taken a place, and there are also a group of language ideas based on this prototype inheritance. However, today, people do

JavaScript Object-oriented Inheritance, javascript object-oriented Javascript is object-oriented and can reflect its inheritance. ...... JS is only based on object-oriented, rather than the real object-oriented, because the three main features of object-oriented: encapsula

Object-oriented and Object-based Almost every developer has development experience in object-oriented languages (such as C ++, C #, and Java. In traditional object-oriented languages, there are two very important concepts: classes and instances. Class defines the common behaviors and methods of a class of things, while the instance is a specific implementation of the class. We also know that object-oriented programming has three important concepts: encapsulation,

Object-oriented and Object-based Almost every developer has development experience in object-oriented languages (such as C ++, C #, and Java. In traditional object-oriented languages, there are two very important concepts: classes and instances. Class defines the common behaviors and methods of a class of things, while the instance is a specific implementation of the class. We also know that object-oriented programming has three important concepts: encapsulation,

JavaScript can be said to be an object-based programming language. Why is it object-based rather than object-oriented? Because JavaScript itself only implements encapsulation without inheritance and polymorphism. 1. Objects in Javascript JavaScript can be said to be an objec

, toLocaleString, and valueOf, but they are not from person. prototype. It comes from Object. prototype in JavaScript, which is the final basic prototype of All prototypes. (The prototype of Object. prototype is null .) In the preceding example, zhangchen. prototype is an object. It is created by calling the Object constructor (though invisible) and is equivalent to executing the following sub-code: The

defined in the superclass prototype are also invisible to the subtype, resulting in only the constructor pattern for all types. In view of these problems, the technique of borrowing constructors is rarely used alone. 3. Combined inheritance function Supertype (name) { this.name = name; This.colors = ["Red", "Blue", "green"]; } SuperType.prototype.sayName = function () { alert (this.name); }; Function subtype (name, age) { //

This article mainly introduces four methods to implement JavaScript inheritance. This article provides methods to implement JS inheritance, such as prototype chain inheritance, construction inheritance, instance inheritance, and c

Javascript: inheritance parsing and javascript Parsing In the previous article, we have introduced the inheritance of combinations. Now we will talk about several inheritance types. Original Type inheritance Call a function to rec

, so does Cat have all the attributes and methods of Animal, the Cat object can directly call the Animal method and attributes. Multi-inheritance: function Class10() { this.showSub = function(a,b) { alert(a-b); } } function Class11() { this.showAdd = function(a,b) { alert(a+b); } } function Class2() { Class10.call(this); Class11.call(this); } It's easy to implement multi-inheritance with two calls. Of cou

Every day, javascript will learn about inheritance and introduce the inheritance-related content. If you are interested, please refer to our friends. Today we will continue to explain the previous encapsulation, today, we are upgrading the content above. In OOP thinking, we will first explain what inheritance actually

When using object-oriented programming, the inheritance relationships between objects are indispensable! Prototype is an important method to implement javascript inheritance!Let's take a look at the following code:Copy codeThe Code is as follows:Function person (name, age ){This. name = name;This. age = age;}Person. prototype. getInfo = function (){Alert ("My nam

When using object-oriented programming, the inheritance between objects is naturally unavoidable! And the prototype is a very important way to achieve JavaScript inheritance! Let's start by looking at the following code: Copy Code code as follows: function person (name, age) { THIS.name = name; This.age = age; } Person.prototype.getInfo =

A simple understanding of the encapsulation and inheritance features in JavaScript, javascript features Encapsulation in JavaScriptIn simple terms, encapsulation allows the outside world to only access the common variables and functions of objects, and hide details and data.There are three methods to create objects in js: portal wide-opening, distinguishing priva