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This article mainly introduces "what is the function of es6 decorator". In daily operation, I believe that many people have doubts about the role of es6 decorator. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful for you to answer the doubt of "what is the role of es6 decorator?" Next, please follow the editor to study!

In es6, the decorator is used to comment or modify the class and class methods, which is a kind of syntax related to the class; the decorator is a compile-time function that adds some control conditions to the class or the attribute methods below the class, usually before the definition of the class and class methods, and can be divided into two types: the class decorator and the class method decorator, and the syntax is "@ function name".

This tutorial operating environment: windows10 system, ECMAScript version 6. 0, Dell G3 computer.

What's the use of es6 decorator?

Decorator: a class-related syntax used to annotate and modify classes and class-related methods and properties. Many object-oriented languages have this feature. Generally related to class class, do not use common methods

A decorator is a function written as @ function name, which can be placed before the class and the class's method definition. The decorator is to execute the function, adding some control conditions to the class or the property methods below the class.

Decorator

Drive some other code for a class or class attribute, which can be reused

Decorators are mainly used for: decoration classes, decoration methods or properties

Examples are as follows:

Decorative category

@ annotationclass MyClass {} function annotation (target) {target.annotated = true;}

A decoration method or attribute.

Class MyClass {@ readonly method () {}} function readonly (target, name, descriptor) {descriptor.writable = false; return descriptor;} at this point, the study of "what is the function of the es6 decorator" is over, hoping to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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