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This article introduces the relevant knowledge of "what are the advantages of the three object-oriented features of js". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Encapsulation: the advantage of encapsulation is that the definition can only manipulate attributes within the class.

These properties cannot be told what to do externally, and they can only be modified through the encapsulation method you define.

2. Inheritance: inheritance reduces the redundancy of the code and omits a lot of duplicate code.

In order to achieve coupling, developers can define the properties and methods that all subclasses must have from the bottom of the parent class.

3. Polymorphism: polymorphism realizes the personalization of methods, and different subclasses can implement different methods according to specific conditions.

The method of parent class definition is not flexible enough to be stretched in special cases.

Example

/ *-use the scope created by the function to achieve the purpose of data encapsulation. -@ type {{getName, setName}} * / var obj= (function () {var _ name= "gcy"; return {getName:function () {return _ name;}, setName:function (val) {_ name=val;};}) (); obj._name; / / undefined obj.getName () / / this is the end of gcy's "what are the advantages of the three object-oriented features of js". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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