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This article illustrates the advanced features of JavaScript object-oriented programming. Share to everyone for your reference, specific as follows:
1. Three ways to create objects:
The first method of construction: New Object
var a = new Object ();
a.x = 1, a.y =
Object-oriented JavaScript---polymorphic polymorphismThe word "polymorphic" originates from the Greek polymorphism, which is poly (plural) + morph (morphology) +ism, which literally we can understand as plural forms.The actual meaning of polymorphism is that the same operation acts on different objects and can produce different interpretations and different execu
JavaScript Object-orientedAn object is actually a reference type. The value of the object is an instance of the reference type. A reference type is a data structure in JavaScript that organizes data and functionality together. It is also often called a class, but there is no
JavaScript Object-orientedAn object is actually a reference type. The value of the object is an instance of the reference type. A reference type is a data structure in JavaScript that organizes data and functionality together. It is also often called a class, but there is no
Source: http://coolshell.cn/articles/6441.htmlJavaScript is a Class C language, his object-oriented things are relatively strange compared to C++/java, but it is quite powerful, in Todd classmate's "object message Model" in the article we can see some clues. Two days ago a former colleague always asked me JavaScript
JavaScript is an object-based (object-based) language, and everything you encounter is almost always an object. However, it is not a true object-oriented programming (OOP) language because it has no syntax class (class).So, what s
The source of this article: "Object-oriented JavaScript" by Stoyan StefanovSource: Original translation of red Shi JunyuCopyright Disclaimer: If you are the original author of the original text and do not want this article to be published, you can contact the author to delete it. This translation is compiled by Shi Junyu , you can use it for learning purposes, bu
JavaScript Object-oriented Programming (II): Inheritance of constructors
The first part of the series focuses on how to "encapsulate" data and methods, and how to generate instances from prototype objects.
Today's introduction is about five ways to "inherit" between objects.For example, there is now a constructor for an "animal"
The main is to eliminate string spaces in JavaScript, to compare the two different ways// object-oriented, eliminating whitespace on both sides of a string function () {returnthis. Replace (/(^\s*) | ( \s*$)/g, "");}; // to the function of the left and right spaces; function Trim (s) { return s.replace (/(^\s*) | ( \s*$)/g, "");}Called to eliminate whitespace in
First, prototype chain inheritanceIn the context of prototype chain inheritance, JavaScript is similar to languages such as Java and C #, allowing only a single parent class to inherit. The basic way to prototype inheritance is as follows:
Copy Code code as follows:
function Parent () {}
function child () {}
Child.prototype = new Parent ();
The prototype property of the object ch
Referring to constructors, we are not unfamiliar, in the object-oriented domain, the constructor is already a commonplace problem. Learning again in JavaScript really has a kind feeling. one, simple review Constructor, is a special method. Used primarily to initialize objects when they are created, that is, o
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.
Object-oriented a
This article introduces JavaScript object-oriented data types.
In JavaScript, there are two types of data:
Original Type: Save some simple data, such as true and 5. JavaScript has a total of 5 primitive types:
● Boolean: boolean. The value is true or false.
● Number: number
cat1 = new Cat ("Da Mao", "Yellow");
var cat2 = new Cat ("Er Mao", "Black");
alert (Cat1.type); Cat Animals
Cat1.eat (); Eat mice
At this point the type attribute and the Eat () method for all instances are actually the same memory address, pointing to the prototype object, thus improving the efficiency of the operation.
Alert (cat1.eat = = cat2.eat); True
PS: Reach Our Goal!
Six, the verification method of proto
Before you learn JavaScript object-oriented programming, you need to know and understand some of the basic common sense of object-oriented. Most of the beginners think that object-oriented
JavaScript Object-oriented and prototypeLearning Essentials:1. Learning conditions2. Create an Object3. Prototypes4. InheritanceECMAScript has two development modes: 1. Functional (procedural), 2. Object-oriented (OOP). An object-
environment that operates DOM elements. You may be a fan of jquery and think this function operation is awesome. However, this is not a reason to completely use this programming mode everywhere. The following jquery source code is used as an example:
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jQuery.fn = jQuery.prototype = { init: function( selector, context ) { ... }, size: function() { return this.length; }, each: function( callback, args ) { return jQuery.each( this, callback, args ); },
JavaScript is an object-based language. Almost everything we encounter is an object. JavaScript is an object-oriented language based on prototype, and has no class concept. Everything is derived from a copy of an existing
What are the hardest places to learn about JavaScript?
I think the object is the hardest. Because the object model of JavaScript is unique and is different from other languages, beginners are not easy to master.
The following is my study notes, I hope to learn this part of help. I mainly refer to the following two bo
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