JavaScript Object-oriented JavaScript class _js object-oriented

Source: Internet
Author: User
Tags static class
In the previous section of the JavaScript object-oriented namespace, you said how to define a JavaScript namespace, which is followed by a concept-class. Although there is no class keyword in JavaScript, we must have this idea as a developer. Classes can be divided into instance classes and static classes in C #, as are JavaScript.

First, define the instance class: In the previous section I defined a namespace, now define a class named article in this namespace:
Copy Code code as follows: () {
var _this=this;
This.content=null; () {
document.write ("document.write ("<p>" +_this.content+ "</p>");

The object is created just like C #:
Copy Code code as follows:

Instantiating an Object
var article =new ();
Assign values to an object's properties
Article.title= "This is the title of the article";
Article.content= "This is the content of the article";
Method of calling Object ();

Second, define static class: The so-called static class is the direct invocation of the members of the class, in other words, the members of the class belong to the class, does not belong to the object. Also take article for example, the code is as follows:
Copy Code code as follows:{
Title: "This is the article headline",
Content: "This is the article contents",
Show:function () {
document.write ("document.write ("<p>" "</p>");

The calling method is similar to C #: ();
Here you may have discovered that the so-called JavaScript static class is actually a JSON object, congratulations, correct! ^_^
Third, how to choose:
So when to select the instance class and when to select the static class, as far as personal experience is concerned (not right, please treatise Dao is, how is it possible to ^_^, to develop some weak dependencies on the DOM, requiring complex programs such as tool classes, plug-in classes, structs, and static classes; Conversely, if the program relies on the DOM very strongly, There are often variable transmission, or the structure of the class changes, then select the instance class. Personal comparison of the first scheme, its code style than the second more like C #, I would like to write the C # students will feel so, ^_^.
Author: Uncle Xiang

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.